{"id":9574526091501,"title":"4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector 4 Inch Silver","handle":"4-inch-draft-blocker-backdraft-damper-duct-draft-stopper-one-way-airflow-ducting-insert-backflow-preventer-inline-fan-vent-deflector-4-inch-silver","description":"\u003ch3\u003e4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector\u003c\/h3\u003e\n\u003cp id=\"b\"\u003e\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eMaterialThe 4 inch backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum\u003c\/li\u003e\n \u003cli\u003eInstallationThe 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\u003c\/li\u003e\n \u003cli\u003eFunctionThis 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\u003c\/li\u003e\n \u003cli\u003eWide 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\u003c\/li\u003e\n \u003cli\u003eNoteBack 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\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-09-16T02:51:51+10:00","created_at":"2026-09-09T13:29:07+10:00","vendor":"Kikerike","type":"Ducting","tags":["industrial_Sep2026"],"price":12500,"price_min":12500,"price_max":12500,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50650328531181,"title":"Silver \/ 4 Inch","option1":"Silver","option2":"4 Inch","option3":null,"sku":"B099KGNZRL","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector 4 Inch Silver - Silver \/ 4 Inch","public_title":"Silver \/ 4 Inch","options":["Silver","4 Inch"],"price":12500,"weight":118,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/leoforward.com\/cdn\/shop\/files\/B099KGNZRL.jpg?v=1788924549","\/\/leoforward.com\/cdn\/shop\/files\/41ZazBONZ5L.jpg?v=1788924549","\/\/leoforward.com\/cdn\/shop\/files\/41BtBREcPQL.jpg?v=1788924549","\/\/leoforward.com\/cdn\/shop\/files\/41sk_lTgLhL.jpg?v=1788924549","\/\/leoforward.com\/cdn\/shop\/files\/41umWKDB-ML.jpg?v=1788924549","\/\/leoforward.com\/cdn\/shop\/files\/51eoBisrRcL.jpg?v=1788924549","\/\/leoforward.com\/cdn\/shop\/files\/91FRruSCckL.jpg?v=1788924549"],"featured_image":"\/\/leoforward.com\/cdn\/shop\/files\/B099KGNZRL.jpg?v=1788924549","options":["Color","Size"],"media":[{"alt":null,"id":41955863396589,"position":1,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/leoforward.com\/cdn\/shop\/files\/B099KGNZRL.jpg?v=1788924549"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/B099KGNZRL.jpg?v=1788924549","width":500},{"alt":null,"id":41955863429357,"position":2,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/leoforward.com\/cdn\/shop\/files\/41ZazBONZ5L.jpg?v=1788924549"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/41ZazBONZ5L.jpg?v=1788924549","width":500},{"alt":null,"id":41955863462125,"position":3,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/leoforward.com\/cdn\/shop\/files\/41BtBREcPQL.jpg?v=1788924549"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/41BtBREcPQL.jpg?v=1788924549","width":500},{"alt":null,"id":41955863494893,"position":4,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/leoforward.com\/cdn\/shop\/files\/41sk_lTgLhL.jpg?v=1788924549"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/41sk_lTgLhL.jpg?v=1788924549","width":500},{"alt":null,"id":41955863527661,"position":5,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/leoforward.com\/cdn\/shop\/files\/41umWKDB-ML.jpg?v=1788924549"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/41umWKDB-ML.jpg?v=1788924549","width":500},{"alt":null,"id":41955863560429,"position":6,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/leoforward.com\/cdn\/shop\/files\/51eoBisrRcL.jpg?v=1788924549"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/51eoBisrRcL.jpg?v=1788924549","width":500},{"alt":null,"id":41955863593197,"position":7,"preview_image":{"aspect_ratio":1.778,"height":1080,"width":1920,"src":"\/\/leoforward.com\/cdn\/shop\/files\/91FRruSCckL.jpg?v=1788924549"},"aspect_ratio":1.778,"height":1080,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/91FRruSCckL.jpg?v=1788924549","width":1920}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003e4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector\u003c\/h3\u003e\n\u003cp id=\"b\"\u003e\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eMaterialThe 4 inch backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum\u003c\/li\u003e\n \u003cli\u003eInstallationThe 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\u003c\/li\u003e\n \u003cli\u003eFunctionThis 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\u003c\/li\u003e\n \u003cli\u003eWide 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\u003c\/li\u003e\n \u003cli\u003eNoteBack 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\u003c\/li\u003e\n \u003c\/ul\u003e"}