4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent

{
  "id": "4-inch-draft-blocker-backdraft-damper-duct-draft-stopper-one-way-airflow-ducting-insert-backflow-preventer-inline-fan-vent",
  "handle": "4-inch-draft-blocker-backdraft-damper-duct-draft-stopper-one-way-airflow-ducting-insert-backflow-preventer-inline-fan-vent",
  "sku": "JC12588",
  "asin": "B099KGNZRL",
  "title": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent",
  "title_original": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector",
  "brand": "Kikerike",
  "price": 28.99,
  "social_proof": {
    "bought_past_month": 1331,
    "text": "1331+ bought in the past month"
  },
  "images": [
    "https://m.media-amazon.com/images/I/614fF1RgQ7L._SL1500_.jpg",
    "https://m.media-amazon.com/images/I/61IBcJv9GwL._SL1500_.jpg",
    "https://m.media-amazon.com/images/I/71x-mOY091L._SL1500_.jpg",
    "https://m.media-amazon.com/images/I/71Umfgri1KL._SL1500_.jpg",
    "https://m.media-amazon.com/images/I/61VAPY6SsSL._SL1500_.jpg",
    "https://m.media-amazon.com/images/I/81boE+M4CbL._SL1500_.jpg"
  ],
  "aplus_images": [
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/ae2bf492-bf56-4f17-8b50-2154d8106542.__CR0,0,970,600_PT0_SX970_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/e4402d20-5890-4574-aabf-5ce3b11dca5e.__CR0,0,970,300_PT0_SX970_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/43e78841-aee8-4eaa-8ecc-c1c956d55dd5.__CR0,0,300,300_PT0_SX300_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/2ebfe565-a922-49e4-883f-dd56b30324e1.__CR0,0,970,300_PT0_SX970_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/0bac07c9-1f97-46b1-9837-e42963fbc834.__CR0,0,970,600_PT0_SX970_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/28383e26-61a6-487b-9e18-f5686d87bb48.__CR0,0,1464,625_PT0_SX1464_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/c0b9b28f-5dc7-4d31-89a7-9049d5f2204e.__CR0,0,315,145_PT0_SX315_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/e493b728-6762-4194-9812-0d52455f5c08.__CR0,0,362,453_PT0_SX362_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/157ffc71-2070-4e90-9f68-d36169c5b6de.__CR0,0,166,182_PT0_SX166_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/86418a87-0835-4040-902e-73e8f9902cf9.__CR0,0,166,182_PT0_SX166_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/1222db98-a104-4399-893d-473515507e9b.__CR0,0,166,182_PT0_SX166_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/a3d50162-9546-4af6-9624-f13cde5a4442.__CR0,0,166,182_PT0_SX166_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/a4ada84c-a2ec-4197-a274-2c6df056f4e4.__CR0,0,362,453_PT0_SX362_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/f469fb2a-7434-489f-960e-035c1e8d0abc.__CR0,0,362,453_PT0_SX362_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/437c2bdf-e78d-4d85-b476-0f7ba2aee018.__CR0,0,166,182_PT0_SX166_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/64498f41-eb01-4db9-8b7f-1b1f97395d31.__CR0,0,166,182_PT0_SX166_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/7756903a-d52d-4510-97b6-a6807c4f17eb.__CR0,0,166,182_PT0_SX166_V1___.jpg",
    "https://m.media-amazon.com/images/S/aplus-media-library-service-media/5cba1f5e-db22-4a04-8c16-71fe45ecb0e8.__CR0,0,166,182_PT0_SX166_V1___.jpg"
  ],
  "bullets": [
    "【Material】The 4 inch backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum",
    "【Installation】The backdraft damper is installed by pushing it into the ventilation pipe as far as it will go. The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally. This also applies to the vertical installation",
    "【Function】This airflow regulating backdraft shutter fits over the TD lip and is designed to improve ventilation by preventing air from re-circulating when the fans are not in use",
    "【Wide Application】 These backdraft dampers can be widely used in ACs, exhaust fans, extractors, range hoods, heating ducts, vents and other residential, commercial and industrial applications",
    "【Note】Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are different. All dimensions are measured manually, please allow 1-3mm differences"
  ],
  "specs": {
    "Manufacturer": "‎Kikerike",
    "Item Weight": "‎4.2 ounces",
    "Package Dimensions": "‎5.43 x 5 x 3.78 inches",
    "Size": "‎4 Inch",
    "Color": "‎Silver",
    "Item Package Quantity": "‎1",
    "Batteries Included?": "‎No",
    "Batteries Required?": "‎No",
    "ASIN": "B099KGNZRL",
    "Customer Reviews": "4.5 4.5 out of 5 stars (1,132) 4.5 out of 5 stars",
    "Best Sellers Rank": "#6,387 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #10 in HVAC Ducting",
    "Date First Available": "July 15, 2021"
  },
  "category": "Tools & Home Improvement > Building Supplies > HVAC > Ducting",
  "category_path": [
    "Tools & Home Improvement",
    "Building Supplies",
    "HVAC",
    "Ducting"
  ],
  "category_slug": "tools-home-improvement/building-supplies/hvac/ducting",
  "category_leaf": "Ducting",
  "variations": {
    "sizes": [],
    "colors": [],
    "size_chart": null
  },
  "reviews": {
    "average_rating": 4.5,
    "customers_say": "Customers find the draft blocker works well, with one mentioning successful use with two dryers, and appreciate its quality and ease of installation.",
    "items": [
      {
        "title": "5.0 out of 5 stars light weight but works as designed",
        "body": "pretty light weight but I think that's by design. Alum so no rust worries - very light spring action. Fit perfectly in the existing duct work. I wasn't able to use the baffle on the fan I bought for the bathroom so this was a nice alternative. Read more",
        "author": "bill",
        "rating": 5,
        "date": "February 16, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Perfect for Low CFM Installs. Works great!",
        "body": "Perfect for my installation. Too many of these type dampers have very stiff springs and it will not work with low CFM air flows. These are great. You can blow at them with your mouth and get them to open. And they seal very well. I use them for air circulation between rooms with fans set to about 60 CFM. The last ones I got restricted about 80% of the air. These only restrict maybe 10%. This is key for low CFM situations like bath exhaust fans, for instance. Read more",
        "author": "J. Alden",
        "rating": 5,
        "date": "January 23, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Quick and easy Backdraft fix!",
        "body": "This draft blocker worked perfect. I was concerned it wouldn't fit inside my old pipe and yet have my old elbow Go over it. It works great to prevent the cold air from going down my dryer vent. I was having trouble with condensation developing on the vent and leaking on the floor. This solve that problem I would recommend it for anybody. Read more",
        "author": "pumpman",
        "rating": 5,
        "date": "February 4, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "4.0 out of 5 stars Works",
        "body": "Pretty good. It stopped the bad backdraft I had, but the center hinge has a bit more gap than I'd like. Read more",
        "author": "Joe P.",
        "rating": 4,
        "date": "January 28, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Proper installation means everything!",
        "body": "I read the lower than 3 star reviews before I purchased and I purchased anyway. Of course there was no instructions but I’m familiar with these things. This damper needs to be installed in the correct orientation. Hinged doors open to the outside. It needs to be connected to the existing 4” exhaust pipe with foil tape (ensure no leakage) on both sides with the spring hinge in a horizontal or vertical position. If you follow those simple rules this thing works great! My 50 CFM fan moved air with no issues and there is no air from the windy outside pushing back into the house. I would say that the closer you install this damper to the outside damper that is attached to your house, the better your results. I would buy this again. Correct installation is everything. Read more",
        "author": "bussboy",
        "rating": 5,
        "date": "January 18, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars I can’t believe it worked so well",
        "body": "Each time the A/C or furnace kicked on it would draw outside air in through the vent hood. Cold in the winter and hot in the summer. The temperature under the hood was significant and very noticeable. So I installed this draft blocker in the pipe in the attic, separating the pipe at a joint inserting the valve and reconnecting the pipes. I seal the joints with aluminum tape. The draft blocker has a weather strip inside sealing it when not in use. I did have to reseal the pipe where it passed through the roof with roof tar to restore the water seal. It works great, the is no back draft now when the A/C is running and made a huge difference. I would recommend and buy again. Read more",
        "author": "Daryl l Jernigan",
        "rating": 5,
        "date": "November 22, 2025",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Great price Great product",
        "body": "Great price Great product Read more",
        "author": "KC Chan",
        "rating": 5,
        "date": "February 27, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Happy with this product it does what they say it does.",
        "body": "These work great for what I need them for. They open and close a few times a day and have been working that way for about seven months now. Simple to install not much else to say. Read more",
        "author": "Customer",
        "rating": 5,
        "date": "October 4, 2025",
        "verified": true,
        "images": []
      }
    ]
  },
  "short_description": "Product description About Kikerike Backdraft Damper The backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum Designed for use in AC, dryer vent, exhaust, extractor or range hoods, heating systems, fans, vents and other residential, commercial and industrial HVAC applications. Please consult and pay attention to product size before buying. Manual measurement, please allow slight errors on size. The colors may exist slight difference due to different screens. Specifications Color: silver Diameter: 3.9\" / 10cm; 4.88\" / 12.5cm; 5.87\" / 15cm; 7.83\" / 20cm; 10\" / 25cm; 12\" / 30cm Package includes: 1 x Balancing Barometric Damper.",
  "about_this_item": "Product description About Kikerike Backdraft Damper The backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum Designed for use in AC, dryer vent, exhaust, extractor or range hoods, heating systems, fans, vents and other residential, commercial and industrial HVAC applications. Please consult and pay attention to product size before buying. Manual measurement, please allow slight errors on size. The colors may exist slight difference due to different screens. Specifications Color: silver Diameter: 3.9\" / 10cm; 4.88\" / 12.5cm; 5.87\" / 15cm; 7.83\" / 20cm; 10\" / 25cm; 12\" / 30cm Package includes: 1 x Balancing Barometric Damper 【Material】The 4 inch backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum; 【Installation】The backdraft damper is installed by pushing it into the ventilation pipe as far as it will go. The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally. This also applies to the vertical installation; 【Function】This airflow regulating backdraft shutter fits over the TD lip and is designed to improve ventilation by preventing air from re",
  "long_description": "Product description About Kikerike Backdraft Damper The backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum Designed for use in AC, dryer vent, exhaust, extractor or range hoods, heating systems, fans, vents and other residential, commercial and industrial HVAC applications. Please consult and pay attention to product size before buying. Manual measurement, please allow slight errors on size. The colors may exist slight difference due to different screens. Specifications Color: silver Diameter: 3.9\" / 10cm; 4.88\" / 12.5cm; 5.87\" / 15cm; 7.83\" / 20cm; 10\" / 25cm; 12\" / 30cm Package includes: 1 x Balancing Barometric Damper\n\nHighlights: 【Material】The 4 inch backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum 【Installation】The backdraft damper is installed by pushing it into the ventilation pipe as far as it will go. The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally. This also applies to the vertical installation 【Function】This airflow regulating backdraft shutter fits over the TD lip and is designed to improve ventilation by preventing air from re-circulating when the fans are not in use 【Wide Application】 These backdraft dampers can be widely used in ACs, exhaust fans, extractors, range hoods, heating ducts, vents and other residential, commercial and industrial applications 【Note】Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are different. All dimensions are measured manually, please allow 1-3mm differences\n\nKey details: Item Weight: ‎4.2 ounces | Package Dimensions: ‎5.43 x 5 x 3.78 inches | Size: ‎4 Inch | Color: ‎Silver | Item Package Quantity: ‎1 | Batteries Included?: ‎No | Batteries Required?: ‎No | Customer Reviews: 4.5 4.5 out of 5 stars (1,132) 4.5 out of 5 stars\n\nHow it fits your day: Use the key specs and highlights above to match it to your setup, space, or routine before you check out.\n\nCustomer feedback: 4.5/5 average rating.\n\nCustomers say: Customers find the draft blocker works well, with one mentioning successful use with two dryers, and appreciate its quality and ease of installation.\n\nReview snippets: pretty light weight but I think that's by design. Alum so no rust worries - very light spring action. Fit perfectly in the existing duct work. I wasn't able to use the baffle on the fan I bought for the / Perfect for my installation. Too many of these type dampers have very stiff springs and it will not work with low CFM air flows. These are great. You can blow at them with your mouth and get them to open.\n\nProduct description About Kikerike Backdraft Damper The backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum Designed for use in AC, dryer vent, exhaust, extractor or range hoods, heating systems, fans, vents and other residential, commercial and industrial HVAC applications. Please consult and pay attention to product size before buying. Manual measurement, please allow slight errors on size. The colors may exist slight difference due to different screens. Specifications Color: silver Diameter: 3.9\" / 10cm; 4.88\" / 12.5cm; 5.87\" / 15cm; 7.83\" / 20cm; 10\" / 25cm; 12\" / 30cm Package includes: 1 x Balancing Barometric Damper",
  "long_description_blocks": [
    {
      "type": "p",
      "text": "Product description About Kikerike Backdraft Damper The backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum Designed for use in AC, dryer vent, exhaust, extractor or range hoods, heating systems, fans, vents and other residential, commercial and industrial HVAC applications. Please consult and pay attention to product size before buying. Manual measurement, please allow slight errors on size. The colors may exist slight difference due to different screens. Specifications Color: silver Diameter: 3.9\" / 10cm; 4.88\" / 12.5cm; 5.87\" / 15cm; 7.83\" / 20cm; 10\" / 25cm; 12\" / 30cm Package includes: 1 x Balancing Barometric Damper"
    },
    {
      "type": "p",
      "text": "Highlights: 【Material】The 4 inch backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum 【Installation】The backdraft damper is installed by pushing it into the ventilation pipe as far as it will go. The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally. This also applies to the vertical installation 【Function】This airflow regulating backdraft shutter fits over the TD lip and is designed to improve ventilation by preventing air from re-circulating when the fans are not in use 【Wide Application】 These backdraft dampers can be widely used in ACs, exhaust fans, extractors, range hoods, heating ducts, vents and other residential, commercial and industrial applications 【Note】Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are different. All dimensions are measured manually, please allow 1-3mm differences"
    },
    {
      "type": "p",
      "text": "Key details: Item Weight: ‎4.2 ounces | Package Dimensions: ‎5.43 x 5 x 3.78 inches | Size: ‎4 Inch | Color: ‎Silver | Item Package Quantity: ‎1 | Batteries Included?: ‎No | Batteries Required?: ‎No | Customer Reviews: 4.5 4.5 out of 5 stars (1,132) 4.5 out of 5 stars"
    },
    {
      "type": "p",
      "text": "How it fits your day: Use the key specs and highlights above to match it to your setup, space, or routine before you check out."
    },
    {
      "type": "p",
      "text": "Customer feedback: 4.5/5 average rating."
    },
    {
      "type": "p",
      "text": "Customers say: Customers find the draft blocker works well, with one mentioning successful use with two dryers, and appreciate its quality and ease of installation."
    },
    {
      "type": "p",
      "text": "Review snippets: pretty light weight but I think that's by design. Alum so no rust worries - very light spring action. Fit perfectly in the existing duct work. I wasn't able to use the baffle on the fan I bought for the / Perfect for my installation. Too many of these type dampers have very stiff springs and it will not work with low CFM air flows. These are great. You can blow at them with your mouth and get them to open."
    },
    {
      "type": "p",
      "text": "Product description About Kikerike Backdraft Damper The backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum Designed for use in AC, dryer vent, exhaust, extractor or range hoods, heating systems, fans, vents and other residential, commercial and industrial HVAC applications. Please consult and pay attention to product size before buying. Manual measurement, please allow slight errors on size. The colors may exist slight difference due to different screens. Specifications Color: silver Diameter: 3.9\" / 10cm; 4.88\" / 12.5cm; 5.87\" / 15cm; 7.83\" / 20cm; 10\" / 25cm; 12\" / 30cm Package includes: 1 x Balancing Barometric Damper"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/ae2bf492-bf56-4f17-8b50-2154d8106542.__CR0,0,970,600_PT0_SX970_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 1"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/e4402d20-5890-4574-aabf-5ce3b11dca5e.__CR0,0,970,300_PT0_SX970_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 2"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/43e78841-aee8-4eaa-8ecc-c1c956d55dd5.__CR0,0,300,300_PT0_SX300_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 3"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/2ebfe565-a922-49e4-883f-dd56b30324e1.__CR0,0,970,300_PT0_SX970_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 4"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/0bac07c9-1f97-46b1-9837-e42963fbc834.__CR0,0,970,600_PT0_SX970_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 5"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/28383e26-61a6-487b-9e18-f5686d87bb48.__CR0,0,1464,625_PT0_SX1464_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 6"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/c0b9b28f-5dc7-4d31-89a7-9049d5f2204e.__CR0,0,315,145_PT0_SX315_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 7"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/e493b728-6762-4194-9812-0d52455f5c08.__CR0,0,362,453_PT0_SX362_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 8"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/157ffc71-2070-4e90-9f68-d36169c5b6de.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 9"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/86418a87-0835-4040-902e-73e8f9902cf9.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 10"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/1222db98-a104-4399-893d-473515507e9b.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 11"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/a3d50162-9546-4af6-9624-f13cde5a4442.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 12"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/a4ada84c-a2ec-4197-a274-2c6df056f4e4.__CR0,0,362,453_PT0_SX362_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 13"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/f469fb2a-7434-489f-960e-035c1e8d0abc.__CR0,0,362,453_PT0_SX362_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 14"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/437c2bdf-e78d-4d85-b476-0f7ba2aee018.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 15"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/64498f41-eb01-4db9-8b7f-1b1f97395d31.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 16"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/7756903a-d52d-4510-97b6-a6807c4f17eb.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 17"
    },
    {
      "type": "img",
      "src": "https://m.media-amazon.com/images/S/aplus-media-library-service-media/5cba1f5e-db22-4a04-8c16-71fe45ecb0e8.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "alt": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent details image 18"
    }
  ],
  "videos": [
    {
      "id": "6f1d2d18-2109-4d0d-9e0e-0f1e11fdb550",
      "src": "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/6f1d2d18-2109-4d0d-9e0e-0f1e11fdb550/default.jobtemplate.hls.m3u8",
      "sources": [
        {
          "type": "application/x-mpegURL",
          "src": "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/6f1d2d18-2109-4d0d-9e0e-0f1e11fdb550/default.jobtemplate.hls.m3u8"
        }
      ],
      "poster": "https://m.media-amazon.com/images/S/al-na-9d5791cf-3faf/31870463-413f-4b28-ae8c-cd7c66e64b3d.mp4/r/THUMBNAIL_360P_FRAME_3_CAPTURE_2.JPG"
    },
    {
      "id": "602b2c77-a9b6-4778-b5c5-14ff6134fbc3",
      "src": "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/602b2c77-a9b6-4778-b5c5-14ff6134fbc3/default.jobtemplate.hls.m3u8",
      "sources": [
        {
          "type": "application/x-mpegURL",
          "src": "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/602b2c77-a9b6-4778-b5c5-14ff6134fbc3/default.jobtemplate.hls.m3u8"
        }
      ],
      "poster": "https://m.media-amazon.com/images/S/al-na-9d5791cf-3faf/31870463-413f-4b28-ae8c-cd7c66e64b3d.mp4/r/THUMBNAIL_360P_FRAME_3_CAPTURE_2.JPG"
    },
    {
      "id": "016c29fd-5c5f-4bdb-b48b-c3d90119b9bf",
      "src": "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/016c29fd-5c5f-4bdb-b48b-c3d90119b9bf/default.vertical.jobtemplate.hls.m3u8",
      "sources": [
        {
          "type": "application/x-mpegURL",
          "src": "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/016c29fd-5c5f-4bdb-b48b-c3d90119b9bf/default.vertical.jobtemplate.hls.m3u8"
        }
      ],
      "poster": "https://m.media-amazon.com/images/S/al-na-9d5791cf-3faf/31870463-413f-4b28-ae8c-cd7c66e64b3d.mp4/r/THUMBNAIL_360P_FRAME_3_CAPTURE_2.JPG"
    },
    {
      "id": "fad56567-2a19-43b2-91a6-e633a48327f9",
      "src": "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/fad56567-2a19-43b2-91a6-e633a48327f9/videopreview.jobtemplate.mp4.342X192P_20HZ_350KBPS_VER_1_0.mp4",
      "sources": [
        {
          "type": "video/mp4",
          "src": "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/fad56567-2a19-43b2-91a6-e633a48327f9/videopreview.jobtemplate.mp4.342X192P_20HZ_350KBPS_VER_1_0.mp4"
        }
      ],
      "poster": "https://m.media-amazon.com/images/S/al-na-9d5791cf-3faf/31870463-413f-4b28-ae8c-cd7c66e64b3d.mp4/r/THUMBNAIL_360P_FRAME_3_CAPTURE_2.JPG"
    },
    {
      "id": "5825ae7a-f325-4fc5-9d32-0e406cfe8ca2",
      "src": "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/5825ae7a-f325-4fc5-9d32-0e406cfe8ca2/videopreview.jobtemplate.mp4.default.mp4",
      "sources": [
        {
          "type": "video/mp4",
          "src": "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/5825ae7a-f325-4fc5-9d32-0e406cfe8ca2/videopreview.jobtemplate.mp4.default.mp4"
        }
      ],
      "poster": "https://m.media-amazon.com/images/S/al-na-9d5791cf-3faf/31870463-413f-4b28-ae8c-cd7c66e64b3d.mp4/r/THUMBNAIL_360P_FRAME_3_CAPTURE_2.JPG"
    },
    {
      "id": "af192c0b-8496-4859-950a-ab377d228dfb",
      "src": "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/af192c0b-8496-4859-950a-ab377d228dfb/videopreview.jobtemplate.mp4.default.mp4",
      "sources": [
        {
          "type": "video/mp4",
          "src": "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/af192c0b-8496-4859-950a-ab377d228dfb/videopreview.jobtemplate.mp4.default.mp4"
        }
      ],
      "poster": "https://m.media-amazon.com/images/S/al-na-9d5791cf-3faf/31870463-413f-4b28-ae8c-cd7c66e64b3d.mp4/r/THUMBNAIL_360P_FRAME_3_CAPTURE_2.JPG"
    }
  ],
  "color_swatches": {
    "6 Inch - 2PCS Black": "https://m.media-amazon.com/images/I/41FjLSMMJ4L._AC_US100_.jpg",
    "8 Inch Silver": "https://m.media-amazon.com/images/I/31N6hljsUkL._AC_US100_.jpg",
    "4 Inch Black": "https://m.media-amazon.com/images/I/411kIaLVPFL._AC_US100_.jpg",
    "8 Inch - 2PCS Silver": "https://m.media-amazon.com/images/I/31Ye+4jGkwL._AC_US100_.jpg",
    "8 Inch Black": "https://m.media-amazon.com/images/I/31Sg9n+8XaL._AC_US100_.jpg",
    "6 Inch Black": "https://m.media-amazon.com/images/I/41lebo7FhUL._AC_US100_.jpg",
    "6 Inch Silver": "https://m.media-amazon.com/images/I/317rneZH4zL._AC_US100_.jpg",
    "8 Inch - 2PCS Black": "https://m.media-amazon.com/images/I/41ss2WE6TeL._AC_US100_.jpg",
    "4 Inch - 2PCS Black": "https://m.media-amazon.com/images/I/41b6S6+81TL._AC_US100_.jpg",
    "4 Inch - 2PCS Silver": "https://m.media-amazon.com/images/I/31wSO7dGm4L._AC_US100_.jpg",
    "10 Inch Black": "https://m.media-amazon.com/images/I/311sTXPeI9L._AC_US100_.jpg",
    "6 Inch - 2PCS Silver": "https://m.media-amazon.com/images/I/31Qbn5zOAYL._AC_US100_.jpg",
    "10 Inch Silver": "https://m.media-amazon.com/images/I/31DQkwpR30L._AC_US100_.jpg",
    "4 Inch Silver": "https://m.media-amazon.com/images/I/31nXgww1rzL._AC_US100_.jpg"
  },
  "color_image_key": {
    "6 Inch - 2PCS Black": "71Jn1uyGqtL",
    "8 Inch Silver": "61V2FgYfWeL",
    "4 Inch Black": "71-FhjSEMeL",
    "8 Inch - 2PCS Silver": "61P7zdrx4EL",
    "8 Inch Black": "51HHkROYg+L",
    "6 Inch Black": "71GGTKqZubL",
    "6 Inch Silver": "51A9nB2V4+L",
    "8 Inch - 2PCS Black": "61UN7g7tfrL",
    "4 Inch - 2PCS Black": "71IUWJOFkwL",
    "4 Inch - 2PCS Silver": "61i+UNr3ZtL",
    "10 Inch Black": "51IdVMtzMCL",
    "6 Inch - 2PCS Silver": "61s3bMgBcVL",
    "10 Inch Silver": "512ivLklxcL",
    "4 Inch Silver": "614fF1RgQ7L"
  },
  "color_images": {
    "6 Inch - 2PCS Black": [
      "https://m.media-amazon.com/images/I/71Jn1uyGqtL._SL1500_.jpg"
    ],
    "8 Inch Silver": [
      "https://m.media-amazon.com/images/I/61V2FgYfWeL._SL1500_.jpg"
    ],
    "4 Inch Black": [
      "https://m.media-amazon.com/images/I/71-FhjSEMeL._SL1500_.jpg"
    ],
    "8 Inch - 2PCS Silver": [
      "https://m.media-amazon.com/images/I/61P7zdrx4EL._SL1500_.jpg"
    ],
    "8 Inch Black": [
      "https://m.media-amazon.com/images/I/51HHkROYg+L._SL1500_.jpg"
    ],
    "6 Inch Black": [
      "https://m.media-amazon.com/images/I/71GGTKqZubL._SL1500_.jpg"
    ],
    "6 Inch Silver": [
      "https://m.media-amazon.com/images/I/51A9nB2V4+L._SL1500_.jpg"
    ],
    "8 Inch - 2PCS Black": [
      "https://m.media-amazon.com/images/I/61UN7g7tfrL._SL1500_.jpg"
    ],
    "4 Inch - 2PCS Black": [
      "https://m.media-amazon.com/images/I/71IUWJOFkwL._SL1500_.jpg"
    ],
    "4 Inch - 2PCS Silver": [
      "https://m.media-amazon.com/images/I/61i+UNr3ZtL._SL1500_.jpg"
    ],
    "10 Inch Black": [
      "https://m.media-amazon.com/images/I/51IdVMtzMCL._SL1500_.jpg"
    ],
    "6 Inch - 2PCS Silver": [
      "https://m.media-amazon.com/images/I/61s3bMgBcVL._SL1500_.jpg"
    ],
    "10 Inch Silver": [
      "https://m.media-amazon.com/images/I/512ivLklxcL._SL1500_.jpg"
    ],
    "4 Inch Silver": [
      "https://m.media-amazon.com/images/I/614fF1RgQ7L._SL1500_.jpg"
    ]
  },
  "description_sources": {
    "meta": "Buy 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector: Draft Stoppers - Amazon.com ✓ FREE DELIVERY possible on eligible purchases",
    "product": "Product description About Kikerike Backdraft Damper The backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum Designed for use in AC, dryer vent, exhaust, extractor or range hoods, heating systems, fans, vents and other residential, commercial and industrial HVAC applications. Please consult and pay attention to product size before buying. Manual measurement, please allow slight errors on size. The colors may exist slight difference due to different screens. Specifications Color: silver Diameter: 3.9\" / 10cm; 4.88\" / 12.5cm; 5.87\" / 15cm; 7.83\" / 20cm; 10\" / 25cm; 12\" / 30cm Package includes: 1 x Balancing Barometric Damper",
    "aplus": "Product description About Kikerike Backdraft Damper The backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum Designed for use in AC, dryer vent, exhaust, extractor or range hoods, heating systems, fans, vents and other residential, commercial and industrial HVAC applications. Please consult and pay attention to product size before buying. Manual measurement, please allow slight errors on size. The colors may exist slight difference due to different screens. Specifications Color: silver Diameter: 3.9\" / 10cm; 4.88\" / 12.5cm; 5.87\" / 15cm; 7.83\" / 20cm; 10\" / 25cm; 12\" / 30cm Package includes: 1 x Balancing Barometric Damper"
  },
  "variant_seo": {
    "variant_dimensions": [],
    "variant_current": {},
    "variant_options": {},
    "item_group_id_candidate": "B0CX1M39MS",
    "unavailable_options": {}
  },
  "normalized_offer": {
    "price": 9.77,
    "currency": "USD",
    "list_price": 64.99,
    "sale_price": 9.77,
    "availability": "InStock",
    "condition": "New",
    "seller_raw": "Emily's Shopping Mall",
    "shipping_raw": "FREE delivery Tuesday, March 17 on orders shipped by Amazon over $35 Or Prime members get FREE delivery Tomorrow, March 13 . Order within 2 hrs 35 mins . Join Prime",
    "delivery_raw": "FREE delivery Tuesday, March 17 on orders shipped by Amazon over $35 Or Prime members get FREE delivery Tomorrow, March 13 . Order within 2 hrs 35 mins . Join Prime"
  },
  "specs_raw": {
    "Manufacturer": "‎Kikerike",
    "Item Weight": "‎4.2 ounces",
    "Package Dimensions": "‎5.43 x 5 x 3.78 inches",
    "Size": "‎4 Inch",
    "Color": "‎Silver",
    "Item Package Quantity": "‎1",
    "Batteries Included?": "‎No",
    "Batteries Required?": "‎No",
    "ASIN": "B099KGNZRL",
    "Customer Reviews": "4.5 4.5 out of 5 stars (1,132) 4.5 out of 5 stars",
    "Best Sellers Rank": "#6,387 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #10 in HVAC Ducting",
    "Date First Available": "July 15, 2021"
  },
  "specs_normalized": {
    "manufacturer": "‎Kikerike",
    "item_weight": "‎4.2 ounces",
    "package_dimensions": "‎5.43 x 5 x 3.78 inches",
    "size": "‎4 Inch",
    "color": "‎Silver",
    "item_package_quantity": "‎1",
    "batteries_included": "‎No",
    "batteries_required": "‎No",
    "asin": "B099KGNZRL",
    "customer_reviews": "4.5 4.5 out of 5 stars (1,132) 4.5 out of 5 stars",
    "best_sellers_rank": "#6,387 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #10 in HVAC Ducting",
    "date_first_available": "July 15, 2021"
  },
  "attributes_normalized": {
    "material": null,
    "dimensions": "‎5.43 x 5 x 3.78 inches",
    "weight": "‎4.2 ounces",
    "fabric": null,
    "closure": null,
    "care": null,
    "fit_type": null,
    "rise": null,
    "inseam": null,
    "sleeve": null,
    "neckline": null,
    "pattern": null,
    "color_spec": "‎Silver"
  },
  "product_overview_rows": [],
  "breadcrumb_items": [
    {
      "text": "Tools & Home Improvement",
      "href": "https://www.amazon.com/Tools-and-Home-Improvement/b/ref=dp_bc_1?ie=UTF8&node=228013"
    },
    {
      "text": "Building Supplies",
      "href": "https://www.amazon.com/building-supply/b/ref=dp_bc_2?ie=UTF8&node=551240"
    },
    {
      "text": "HVAC",
      "href": "https://www.amazon.com/HVAC/b/ref=dp_bc_3?ie=UTF8&node=495346"
    },
    {
      "text": "Ducting",
      "href": "https://www.amazon.com/ducting/b/ref=dp_bc_4?ie=UTF8&node=13399911"
    }
  ],
  "department_store": "Tools & Home Improvement",
  "rating_average": 4.5,
  "rating_count": 1132,
  "ratings_histogram": null,
  "review_summary_raw": "Customers find the draft blocker works well, with one mentioning successful use with two dryers, and appreciate its quality and ease of installation.",
  "customers_say_raw": "Customers find the draft blocker works well, with one mentioning successful use with two dryers, and appreciate its quality and ease of installation.",
  "media_seo": {
    "images_hero": "https://m.media-amazon.com/images/I/614fF1RgQ7L._SL1500_.jpg",
    "images_gallery": [
      "https://m.media-amazon.com/images/I/61IBcJv9GwL._SL1500_.jpg",
      "https://m.media-amazon.com/images/I/71x-mOY091L._SL1500_.jpg",
      "https://m.media-amazon.com/images/I/71Umfgri1KL._SL1500_.jpg",
      "https://m.media-amazon.com/images/I/61VAPY6SsSL._SL1500_.jpg",
      "https://m.media-amazon.com/images/I/81boE+M4CbL._SL1500_.jpg"
    ],
    "images_variant_map": {
      "6 Inch - 2PCS Black": "https://m.media-amazon.com/images/I/71Jn1uyGqtL._SL1500_.jpg",
      "8 Inch Silver": "https://m.media-amazon.com/images/I/61V2FgYfWeL._SL1500_.jpg",
      "4 Inch Black": "https://m.media-amazon.com/images/I/71-FhjSEMeL._SL1500_.jpg",
      "8 Inch - 2PCS Silver": "https://m.media-amazon.com/images/I/61P7zdrx4EL._SL1500_.jpg",
      "8 Inch Black": "https://m.media-amazon.com/images/I/51HHkROYg+L._SL1500_.jpg",
      "6 Inch Black": "https://m.media-amazon.com/images/I/71GGTKqZubL._SL1500_.jpg",
      "6 Inch Silver": "https://m.media-amazon.com/images/I/51A9nB2V4+L._SL1500_.jpg",
      "8 Inch - 2PCS Black": "https://m.media-amazon.com/images/I/61UN7g7tfrL._SL1500_.jpg",
      "4 Inch - 2PCS Black": "https://m.media-amazon.com/images/I/71IUWJOFkwL._SL1500_.jpg",
      "4 Inch - 2PCS Silver": "https://m.media-amazon.com/images/I/61i+UNr3ZtL._SL1500_.jpg",
      "10 Inch Black": "https://m.media-amazon.com/images/I/51IdVMtzMCL._SL1500_.jpg",
      "6 Inch - 2PCS Silver": "https://m.media-amazon.com/images/I/61s3bMgBcVL._SL1500_.jpg",
      "10 Inch Silver": "https://m.media-amazon.com/images/I/512ivLklxcL._SL1500_.jpg",
      "4 Inch Silver": "https://m.media-amazon.com/images/I/614fF1RgQ7L._SL1500_.jpg"
    },
    "images_aplus": [
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/ae2bf492-bf56-4f17-8b50-2154d8106542.__CR0,0,970,600_PT0_SX970_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/e4402d20-5890-4574-aabf-5ce3b11dca5e.__CR0,0,970,300_PT0_SX970_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/43e78841-aee8-4eaa-8ecc-c1c956d55dd5.__CR0,0,300,300_PT0_SX300_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/2ebfe565-a922-49e4-883f-dd56b30324e1.__CR0,0,970,300_PT0_SX970_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/0bac07c9-1f97-46b1-9837-e42963fbc834.__CR0,0,970,600_PT0_SX970_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/28383e26-61a6-487b-9e18-f5686d87bb48.__CR0,0,1464,625_PT0_SX1464_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/c0b9b28f-5dc7-4d31-89a7-9049d5f2204e.__CR0,0,315,145_PT0_SX315_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/e493b728-6762-4194-9812-0d52455f5c08.__CR0,0,362,453_PT0_SX362_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/157ffc71-2070-4e90-9f68-d36169c5b6de.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/86418a87-0835-4040-902e-73e8f9902cf9.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/1222db98-a104-4399-893d-473515507e9b.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/a3d50162-9546-4af6-9624-f13cde5a4442.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/a4ada84c-a2ec-4197-a274-2c6df056f4e4.__CR0,0,362,453_PT0_SX362_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/f469fb2a-7434-489f-960e-035c1e8d0abc.__CR0,0,362,453_PT0_SX362_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/437c2bdf-e78d-4d85-b476-0f7ba2aee018.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/64498f41-eb01-4db9-8b7f-1b1f97395d31.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/7756903a-d52d-4510-97b6-a6807c4f17eb.__CR0,0,166,182_PT0_SX166_V1___.jpg",
      "https://m.media-amazon.com/images/S/aplus-media-library-service-media/5cba1f5e-db22-4a04-8c16-71fe45ecb0e8.__CR0,0,166,182_PT0_SX166_V1___.jpg"
    ],
    "videos": [
      "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/6f1d2d18-2109-4d0d-9e0e-0f1e11fdb550/default.jobtemplate.hls.m3u8",
      "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/602b2c77-a9b6-4778-b5c5-14ff6134fbc3/default.jobtemplate.hls.m3u8",
      "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/016c29fd-5c5f-4bdb-b48b-c3d90119b9bf/default.vertical.jobtemplate.hls.m3u8",
      "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/fad56567-2a19-43b2-91a6-e633a48327f9/videopreview.jobtemplate.mp4.342X192P_20HZ_350KBPS_VER_1_0.mp4",
      "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/5825ae7a-f325-4fc5-9d32-0e406cfe8ca2/videopreview.jobtemplate.mp4.default.mp4",
      "https://m.media-amazon.com/images/S/vse-vms-transcoding-artifact-us-east-1-prod/af192c0b-8496-4859-950a-ab377d228dfb/videopreview.jobtemplate.mp4.default.mp4"
    ],
    "media_counts": {
      "gallery": 6,
      "aplus": 18,
      "variant_colors_with_images": 14,
      "videos": 6
    }
  },
  "page_metadata": {
    "canonical_url": "https://www.amazon.com/Blocker-Backdraft-Backflow-Preventer-Deflector/dp/B099KGNZRL",
    "meta_title_raw": "Amazon.com: 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector : Home & Kitchen",
    "meta_description_raw": "Buy 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector: Draft Stoppers - Amazon.com ✓ FREE DELIVERY possible on eligible purchases",
    "og_title": null,
    "og_description": null,
    "og_image": null,
    "robots_meta": null
  },
  "schema_inputs": {
    "name_candidate": "4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector",
    "brand": "Kikerike",
    "sku": "B099KGNZRL",
    "identifiers": {
      "asin": "B099KGNZRL",
      "upc": null,
      "ean": null,
      "gtin": null,
      "mpn": null,
      "isbn": null
    },
    "image_urls": [
      "https://m.media-amazon.com/images/I/614fF1RgQ7L._SL1500_.jpg",
      "https://m.media-amazon.com/images/I/61IBcJv9GwL._SL1500_.jpg",
      "https://m.media-amazon.com/images/I/71x-mOY091L._SL1500_.jpg",
      "https://m.media-amazon.com/images/I/71Umfgri1KL._SL1500_.jpg",
      "https://m.media-amazon.com/images/I/61VAPY6SsSL._SL1500_.jpg"
    ],
    "offer": {
      "price": 9.77,
      "currency": "USD",
      "availability": "InStock"
    },
    "aggregate_rating": {
      "rating_value": 4.5,
      "review_count": 1132
    },
    "variant_candidates": {},
    "twister": {
      "dimensions": [
        "size_name"
      ],
      "values": {
        "size_name": [
          "4 Inch",
          "4 Inch - 2PCS",
          "6 Inch",
          "6 Inch - 2PCS",
          "8 Inch",
          "8 Inch - 2PCS",
          "10 Inch"
        ]
      },
      "asin_by_value": {
        "size_name": {
          "4 Inch": "B099KGNZRL",
          "4 Inch - 2PCS": "B0BW5Z19B1",
          "6 Inch": "B099KGLXQC",
          "6 Inch - 2PCS": "B0BW5YBVYG",
          "8 Inch": "B099JXNM75",
          "8 Inch - 2PCS": "B0BW5ZQB1K",
          "10 Inch": "B09WHTHJ2H"
        }
      }
    }
  },
  "merchant_inputs": {
    "title_parts": {
      "brand": "Kikerike",
      "product_type": "Ducting",
      "model": null
    },
    "description_facts": [
      "【Material】The 4 inch backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum",
      "【Installation】The backdraft damper is installed by pushing it into the ventilation pipe as far as it will go. The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally. This also applies to the vertical installation",
      "【Function】This airflow regulating backdraft shutter fits over the TD lip and is designed to improve ventilation by preventing air from re-circulating when the fans are not in use",
      "【Wide Application】 These backdraft dampers can be widely used in ACs, exhaust fans, extractors, range hoods, heating ducts, vents and other residential, commercial and industrial applications",
      "【Note】Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are different. All dimensions are measured manually, please allow 1-3mm differences"
    ],
    "color": "‎Silver",
    "size": null,
    "material": null,
    "pattern": null,
    "gender": null,
    "age_group": "adult",
    "item_group_id_candidate": "B0CX1M39MS",
    "image_link": "https://m.media-amazon.com/images/I/614fF1RgQ7L._SL1500_.jpg",
    "additional_image_links": [
      "https://m.media-amazon.com/images/I/61IBcJv9GwL._SL1500_.jpg",
      "https://m.media-amazon.com/images/I/71x-mOY091L._SL1500_.jpg",
      "https://m.media-amazon.com/images/I/71Umfgri1KL._SL1500_.jpg",
      "https://m.media-amazon.com/images/I/61VAPY6SsSL._SL1500_.jpg"
    ],
    "price": 9.77,
    "availability": "InStock"
  },
  "qa": {
    "asin_filename": "B099KGNZRL",
    "asin_html_detected": "B099KGNZRL",
    "asin_match": true,
    "qa_flags": [],
    "qa_score": 100,
    "parse_warnings": [],
    "identity_warnings": [],
    "field_sources": {
      "title": "og:title",
      "review_avg": "acrPopover"
    },
    "field_confidence": {
      "title": "high",
      "brand": "high",
      "price": "high",
      "images": "high",
      "reviews": "high"
    }
  },
  "brand_info": {
    "brand": "Kikerike",
    "brand_raw": "Kikerike",
    "creator_raw": null,
    "author_raw": null,
    "format_raw": null,
    "brand_confidence": "high",
    "brand_qa_flags": []
  },
  "title_seo": "Inch Draft Blocker Backdraft Damper Duct Draft Stopper One Way Airflow Ducting Insert Backflow Preventer",
  "title_seo_family": "home_kitchen",
  "title_seo_product_type": "Ducting",
  "title_seo_type_source": "fallback"
}