--- product_id: 497238403 title: "AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 100mm Ducting in Range Hoods and Bathrooms Fans, 4-Inch" brand: "ac infinity" price: "AED 148" currency: AED in_stock: true reviews_count: 7 category: "Ac Infinity" url: https://www.desertcart.ae/products/497238403-ac-infinity-100mm-backdraft-damper-one-way-airflow-ducting-insert store_origin: AE region: United Arab Emirates --- # Spring-loaded aluminum blades for effortless airflow Rubber gaskets ensure airtight seal Galvanized steel body for durability AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 100mm Ducting in Range Hoods and Bathrooms Fans, 4-Inch **Brand:** ac infinity **Price:** AED 148 **Availability:** ✅ In Stock ## Summary > 🌬️ Seal the airflow, unlock comfort — no more drafts, just pure efficiency! ## Quick Answers - **What is this?** AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 100mm Ducting in Range Hoods and Bathrooms Fans, 4-Inch by ac infinity - **How much does it cost?** AED 148 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/497238403-ac-infinity-100mm-backdraft-damper-one-way-airflow-ducting-insert) ## Best For - ac infinity enthusiasts ## Why This Product - Trusted ac infinity brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Universal 4-Inch Fit:** Designed to seamlessly insert into standard 4-inch duct openings for versatile HVAC applications. - • **Airtight Seal Technology:** Dual rubber gasket rings create a secure, airtight grip to eliminate cold drafts and energy loss. - • **Flexible Mounting Options:** Mounts horizontally or vertically to adapt perfectly to your range hoods, bathroom fans, or grow tents. - • **Effortless One-Way Airflow:** Spring-loaded aluminum blades open with minimal airflow, preventing backdrafts and debris intrusion. - • **Durable Powder-Coated Steel:** Robust galvanized steel body with sleek black powder coat finish ensures long-lasting performance and style. ## Overview The AC Infinity 100mm Backdraft Damper is a premium one-way airflow duct insert engineered for 4-inch duct systems. Featuring a galvanized steel body with a powder-coated finish, spring-loaded aluminum blades, and dual rubber gaskets, it prevents backdrafts and debris while maintaining airtight seals. Ideal for range hoods, bathroom fans, and HVAC setups, it mounts horizontally or vertically to optimize airflow and energy efficiency. ## Description An antidraft duct insert designed for use with range hoods, bathroom fans and other home HVAC applications. Features outer rubber gaskets that create an airtight seal and grip between the damper and ducts. Mounts horizontally or vertically to prevent backflow and debris from entering ducting. Galvanized steel body with spring-loaded aluminum damper blades that open with minimal airflow. Fit for 4 in. Duct Openings | Product Length: 5.03 inches | Finish: Powder Coat Product Description A ventilation ducting tool designed for insertion into 4” ducting to prevent cold drafts and debris from flowing into ventilation systems. Built to be embedded in ducts, the backdraft damper is made of sturdy galvanized steel and features two rings of outer rubber gaskets. This enables it to grip your ducting with an airtight seal in either a horizontal or vertical orientation. The butterfly damper blades are made of aluminum and are equipped with a light spring that folds with minimal airflow. Applications The spring-loaded antidraft damper is built for heavy-duty performance in applications like overhead range hoods in kitchens, bathroom fans and tumble dryers. It can be fully or partially inserted into your duct work using the rubber rings to hold itself in place. Other one-way airflow uses include keep pilot lights burning in water heaters and keeping debris from entering inline duct fans in grow tents. Product Identification Manufacturer AC Infinity Inc. Product Name Backdraft Damper, 4" Product Model AC-BDD4-B UPC Code 819137021303 Product and Mounting Dimensions Duct Opening Size 4" Product Length 5.03 in. (12.8 cm) Product Performance and Technical Specs Whole Body Material Steel Shutter Material Aluminum Color Black Finish Powder Coat Review: Very good looking and sturdy. - Unfortunately didn't use this as the fan they sent was the wrong one and now they haven't got the one i want in stock so returned everything and got the 16 inch airlift fan instead but it was a very nice looking piece of kit and i would of been very happy to have used this. Review: Top bit of kit - Brilliant, sorted out the air coming into the property instantly! Felt warmer straight away, and looks very tidy and good quality. FOr the price of it as well, cant fault it at all. ## Features - An antidraft duct insert designed for use with range hoods, bathroom fans and other home HVAC applications. - Features outer rubber gaskets that create an airtight seal and grip between the damper and ducts. - Mounts horizontally or vertically to prevent backflow and debris from entering ducting. - Galvanized steel body with spring-loaded aluminum damper blades that open with minimal airflow. - Fit for 4 in. Duct Openings | Product Length: 5.03 inches | Finish: Powder Coat ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0842XSTV9 | | Best Sellers Rank | 45,861 in DIY & Tools ( See Top 100 in DIY & Tools ) 156 in Ducting | | Brand | AC Infinity | | Colour | Black | | Connector Type | Insert | | Connector type | Insert | | Country of Origin | China | | Customer Reviews | 4.5 out of 5 stars 1,895 Reviews | | Item Dimensions | 12.7 x 9.7 x 9.7 centimetres | | Item dimensions L x W x H | 12.7 x 9.7 x 9.7 centimetres | | Manufacturer | AC Infinity | | Material | Alloy Steel , Aluminium | | Model Number | AC-BDD4-B | | Part Number | AC-BDD4-B | | Size | 4 Inch | | Thread Type | NPT | | UPC | 819137021303 | | Unit Count | 1.0 count | ## Product Details - **Brand:** AC Infinity - **Colour:** Black - **Item dimensions L x W x H:** 12.7 x 9.7 x 9.7 centimetres - **Manufacturer:** AC Infinity - **Material:** Alloy Steel, Aluminium - **Number of Packs:** 1 - **Size:** 4 Inch - **Thread type:** NPT - **UPC:** 819137021303 - **Unit count:** 1.0 count ## Images ![AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 100mm Ducting in Range Hoods and Bathrooms Fans, 4-Inch - Image 1](https://m.media-amazon.com/images/I/51lALiYTYEL.jpg) ![AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 100mm Ducting in Range Hoods and Bathrooms Fans, 4-Inch - Image 2](https://m.media-amazon.com/images/I/51jBoph3RiL.jpg) ![AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 100mm Ducting in Range Hoods and Bathrooms Fans, 4-Inch - Image 3](https://m.media-amazon.com/images/I/51Vig+xStqL.jpg) ![AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 100mm Ducting in Range Hoods and Bathrooms Fans, 4-Inch - Image 4](https://m.media-amazon.com/images/I/51JTxQHs5SL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very good looking and sturdy. *by M***H on 28 June 2026* Unfortunately didn't use this as the fan they sent was the wrong one and now they haven't got the one i want in stock so returned everything and got the 16 inch airlift fan instead but it was a very nice looking piece of kit and i would of been very happy to have used this. ### ⭐⭐⭐⭐⭐ Top bit of kit *by C***S on 7 January 2026* Brilliant, sorted out the air coming into the property instantly! Felt warmer straight away, and looks very tidy and good quality. FOr the price of it as well, cant fault it at all. ### ⭐⭐⭐⭐⭐ Solid, heavy, well made. *by C***O on 7 December 2024* Very solid unit. Walls are easily 2-3x thicker than the cheap ebay one I had before. Great design and quality. ## Frequently Bought Together - AC Infinity 4" Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 4” Ducting in Range Hoods and Bathrooms Fans - AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust - AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 8-Feet Long for Heating Cooling Ventilation and Exhaust --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ae/products/497238403-ac-infinity-100mm-backdraft-damper-one-way-airflow-ducting-insert](https://www.desertcart.ae/products/497238403-ac-infinity-100mm-backdraft-damper-one-way-airflow-ducting-insert) --- *Product available on Desertcart United Arab Emirates* *Store origin: AE* *Last updated: 2026-07-09*