--- product_id: 209376297 title: "AC Infinity 4\" Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 4” Ducting in Range Hoods and Bathrooms Fans" brand: "ac infinity" price: "€ 43.86" currency: EUR in_stock: true reviews_count: 13 category: "Ac Infinity" url: https://www.desertcart.at/products/209376297-ac-infinity-4-backdraft-damper-one-way-airflow-ducting-insert store_origin: AT region: Austria --- # spring-loaded airflow blades airtight rubber gasket seal 4-inch duct fit precision AC Infinity 4" Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 4” Ducting in Range Hoods and Bathrooms Fans **Brand:** ac infinity **Price:** € 43.86 **Availability:** ✅ In Stock ## Summary > 🔄 Stop backdrafts before they start — airflow perfected with style! ## Quick Answers - **What is this?** AC Infinity 4" Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 4” Ducting in Range Hoods and Bathrooms Fans by ac infinity - **How much does it cost?** € 43.86 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/209376297-ac-infinity-4-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 - • **Smart Spring-Loaded Blades:** Innovative folding blades open with minimal airflow, ensuring efficient one-way ventilation. - • **Versatile Mounting Options:** Mount horizontally or vertically to suit any HVAC setup without compromising performance. - • **Airtight Rubber Gasket Seal:** Premium outer gaskets create a tight, secure seal to block drafts, debris, and pests. - • **Durable Galvanized Steel Build:** Powder-coated steel body guarantees long-lasting durability and sleek aesthetics. - • **Seamless 4" Duct Compatibility:** Perfectly engineered to fit standard 4-inch duct openings for effortless integration. ## Overview The AC Infinity 4" Backdraft Damper is a high-quality HVAC accessory designed to prevent unwanted airflow and debris from entering duct systems. Featuring spring-loaded aluminum blades and airtight rubber gaskets, it fits standard 4-inch ducts and mounts in any orientation. Its galvanized steel construction with powder coat finish ensures durability and a professional look, making it ideal for range hoods, bathroom fans, and other ventilation applications. ## Description AC Infinity is a technology company that specializes in environmental controls for audio/video and HVAC. The company was founded on the principle of working closely with customers to develop great products. Dependable service and a commitment to product quality are the foundations of the business's values. AIRTAP Series Visit the Store AIRTAP Series Visit the Store AIRTITAN Series Visit the Store AIRTITAN Series AIRLIFT Series Visit the Store AIRLIFT Series AIRBLAZE Series Visit the Store AIRBLAZE Series ## 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 | #15,979 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #17 in HVAC Ducting | | Brand | AC Infinity | | Brand Name | AC Infinity | | Color | Black | | Customer Reviews | 4.6 out of 5 stars 2,003 Reviews | | Item Dimensions | 5 x 3.81 x 3.81 inches | | Item dimensions L x W x H | 5 x 3.81 x 3.81 inches | | Manufacturer | AC Infinity | | Manufacturer Part Number | AC-BDD4-B | | Material | Alloy Steel , Aluminum | | Material Type | Alloy Steel, Aluminum | | Model Number | AC-BDD4-B | | Number of Packs | 1 | | Size | 4" | | UPC | 819137021303 | | Unit Count | 1 Count | ## Product Details - **Brand:** AC Infinity - **Color:** Black - **Item dimensions L x W x H:** 5 x 3.81 x 3.81 inches - **Manufacturer:** AC Infinity - **Material:** Alloy Steel, Aluminum - **Size:** 4" - **UPC:** 819137021303 ## Images ![AC Infinity 4" Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 4” Ducting in Range Hoods and Bathrooms Fans - Image 1](https://m.media-amazon.com/images/I/51lALiYTYEL.jpg) ![AC Infinity 4" Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 4” Ducting in Range Hoods and Bathrooms Fans - Image 2](https://m.media-amazon.com/images/I/51jBoph3RiL.jpg) ![AC Infinity 4" Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 4” Ducting in Range Hoods and Bathrooms Fans - Image 3](https://m.media-amazon.com/images/I/51Vig+xStqL.jpg) ![AC Infinity 4" Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 4” Ducting in Range Hoods and Bathrooms Fans - Image 4](https://m.media-amazon.com/images/I/51JTxQHs5SL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by S***E on April 8, 2026* ### ⭐⭐⭐⭐⭐ Review *by C***. on December 2, 2025* ### ⭐⭐⭐⭐⭐ Review *by 玄***衡 on March 6, 2025* ## 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.at/products/209376297-ac-infinity-4-backdraft-damper-one-way-airflow-ducting-insert](https://www.desertcart.at/products/209376297-ac-infinity-4-backdraft-damper-one-way-airflow-ducting-insert) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-05-04*