--- product_id: 497238403 title: "AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert" brand: "ac infinity" price: "S/.206" currency: PEN in_stock: true category: "Ac Infinity" url: https://www.desertcart.pe/products/497238403-ac-infinity-100mm-backdraft-damper-one-way-airflow-ducting-insert store_origin: PE region: Peru --- # 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 **Brand:** ac infinity **Price:** S/.206 **Availability:** ✅ In Stock ## Summary > 🌀 Keep your airflow flawless and your space draft-free! ## Quick Answers - **What is this?** AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert by ac infinity - **How much does it cost?** S/.206 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/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 - • **Built to Last:** Durable galvanized steel body with powder coat finish resists corrosion and wear for long-term reliability. - • **Versatile Mounting:** Mount horizontally or vertically to fit any ducting setup without compromising performance. - • **Perfect Fit for 4" Ducts:** Precisely engineered for standard 4-inch duct openings, ensuring seamless integration. - • **Airtight Seal, Zero Drafts:** Dual rubber gaskets create a secure grip and airtight barrier to block cold drafts and debris. - • **Effortless One-Way Airflow:** Spring-loaded aluminum damper blades open with minimal airflow, maximizing ventilation efficiency. ## Overview The AC Infinity 100mm Backdraft Damper is a robust, spring-loaded one-way airflow insert designed for 4-inch ducts. Featuring a galvanized steel body, powder coat finish, and airtight rubber gaskets, it prevents backflow, drafts, and debris in HVAC systems. Its versatile horizontal or vertical mounting and minimal airflow resistance make it ideal for range hoods, bathroom fans, and other ventilation applications. ## 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 ## 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 | 48,848 in DIY & Tools ( See Top 100 in DIY & Tools ) 123 in Ducting | | Brand | AC Infinity | | Colour | Black | | Connector Type | Insert | | Country of Origin | China | | Customer Reviews | 4.5 4.5 out of 5 stars (1,907) | | Item Dimensions | 12.7 x 9.7 x 9.7 centimetres | | Manufacturer | AC Infinity | | Material | Alloy Steel, Aluminium | | Model Number | AC-BDD4-B | | Number of Packs | 1 | | 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 - **Connector type:** Insert - **Item Highlight:** with Spring-Loaded Folding Blades for 100mm Ducting in Range Hoods and Bathrooms Fans, 4-Inch - **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 ## Images ![AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert - Image 1](https://m.media-amazon.com/images/I/51lALiYTYEL.jpg) ![AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert - Image 2](https://m.media-amazon.com/images/I/41nAGzohYML.jpg) ![AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert - Image 3](https://m.media-amazon.com/images/I/41gdXE8dzvL.jpg) ![AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert - Image 4](https://m.media-amazon.com/images/I/41HC3QycSVL.jpg) ![AC Infinity 100mm Backdraft Damper, One-Way Airflow Ducting Insert - Image 5](https://m.media-amazon.com/images/I/41GStZDT5uL.jpg) ## Available Options This product comes in different **Size** options. ## 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.pe/products/497238403-ac-infinity-100mm-backdraft-damper-one-way-airflow-ducting-insert](https://www.desertcart.pe/products/497238403-ac-infinity-100mm-backdraft-damper-one-way-airflow-ducting-insert) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-08-22*