--- product_id: 347403560 title: "- 4\" inch Plastic Inline Backdraft Damper. Connect Exhaust or Bathroom air Dryer and ducting with Backdraft Damper. HVAC. Heating. Cooling. Kitchen and Bathroom Applications." brand: "ecopro vent" price: "$1.82" currency: USD in_stock: false reviews_count: 5 url: https://www.desertcart.us/products/347403560-4-inch-plastic-inline-backdraft-damper-connect-exhaust-or-bathroom store_origin: US region: United States of America --- # 4-inch diameter precision fit Heat-resistant 5°F to 160°F Durable lightweight PVC build - 4" inch Plastic Inline Backdraft Damper. Connect Exhaust or Bathroom air Dryer and ducting with Backdraft Damper. HVAC. Heating. Cooling. Kitchen and Bathroom Applications. **Brand:** ecopro vent **Price:** $1.82 **Availability:** ❌ Out of Stock ## Summary > 🚀 Upgrade your airflow game with the ultimate backdraft damper! ## Quick Answers - **What is this?** - 4" inch Plastic Inline Backdraft Damper. Connect Exhaust or Bathroom air Dryer and ducting with Backdraft Damper. HVAC. Heating. Cooling. Kitchen and Bathroom Applications. by ecopro vent - **How much does it cost?** $1.82 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/347403560-4-inch-plastic-inline-backdraft-damper-connect-exhaust-or-bathroom) ## Best For - ecopro vent enthusiasts ## Why This Product - Trusted ecopro vent brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seamless 4" Fit:** Perfectly sized for standard ducting, ensuring airtight connections every time. - • **Lightweight Durability:** Crafted from robust PVC plastic for long-lasting performance without the bulk. - • **Effortless DIY Assembly:** Quick press-on design compatible with flex or straight ducts—no pro needed. - • **Heat-Resistant Reliability:** Operates flawlessly in temperatures from freezing 5°F up to 160°F. - • **Versatile HVAC Compatibility:** Ideal for heating, cooling, kitchen, and bathroom exhaust systems. ## Overview This 4-inch PVC inline backdraft damper by ECOPRO VENT offers a lightweight yet durable solution for preventing reverse airflow in HVAC, kitchen, and bathroom exhaust systems. Designed for easy DIY installation, it fits standard round ducts and withstands temperatures from 5°F to 160°F, ensuring reliable performance across heating and cooling applications. ## Description Our products are made out of high quality plastic and coated steel. Guaranteed long life and durability. good compatibility with other ECOPRO VENT products. Review: Didn't seal real well at first and door was springy. Took minor tuning of the air valve and she clackin' now. Review: Although the outer ribbed ring is fairly firm, the flapper falls out. ## Features - PVC Plastic duct connector with back draft damper. pipe connector of round ducts. Ø4 inch. - Made out of plastic - durable and light. - Quick and easy to assemble - DIY Press on chosen duct - flex or straight - and by using montage glue. tape or steel clamps tighten the connection. - perfect for Heating. cooling or air conditioning - HVAC. bathroom and kitchen air exhaust. - Heat-resistant from: 5 °F to 160 °F. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08XXWHT2N | | ASIN | B08XXWHT2N | | Batteries Included? | No | | Batteries Required? | No | | Color | White | | Customer Reviews | 3.8 3.8 out of 5 stars (41) | | Customer reviews | 3.8 3.8 out of 5 stars (41) | | Date First Available | 21 March 2021 | | Date First Available | 21 March 2021 | | Item Package Quantity | 1 | | Item Weight | 50 g | | Manufacturer | ECOPRO VENT | | Manufacturer | ECOPRO VENT | | Material | Plastic | | Number Of Pieces | 1 | | Product Dimensions | 9.98 x 6.2 x 9.98 cm; 50 g | | Product Dimensions | 9.98 x 6.2 x 9.98 cm; 50 g | | Size | 4 Inch | ## Images ![- 4" inch Plastic Inline Backdraft Damper. Connect Exhaust or Bathroom air Dryer and ducting with Backdraft Damper. HVAC. Heating. Cooling. Kitchen and Bathroom Applications. - Image 1](https://m.media-amazon.com/images/I/41AmshwL6SL.jpg) ![- 4" inch Plastic Inline Backdraft Damper. Connect Exhaust or Bathroom air Dryer and ducting with Backdraft Damper. HVAC. Heating. Cooling. Kitchen and Bathroom Applications. - Image 2](https://m.media-amazon.com/images/I/51txSTyjITL.jpg) ![- 4" inch Plastic Inline Backdraft Damper. Connect Exhaust or Bathroom air Dryer and ducting with Backdraft Damper. HVAC. Heating. Cooling. Kitchen and Bathroom Applications. - Image 3](https://m.media-amazon.com/images/I/41xLt1PylFL.jpg) ![- 4" inch Plastic Inline Backdraft Damper. Connect Exhaust or Bathroom air Dryer and ducting with Backdraft Damper. HVAC. Heating. Cooling. Kitchen and Bathroom Applications. - Image 4](https://m.media-amazon.com/images/I/41lLLvOsSBL.jpg) ![- 4" inch Plastic Inline Backdraft Damper. Connect Exhaust or Bathroom air Dryer and ducting with Backdraft Damper. HVAC. Heating. Cooling. Kitchen and Bathroom Applications. - Image 5](https://m.media-amazon.com/images/I/51A9NHg4YAL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by R***L on 7 September 2022* Didn't seal real well at first and door was springy. Took minor tuning of the air valve and she clackin' now. ### ⭐⭐ Review *by T***Y on 24 June 2025* Although the outer ribbed ring is fairly firm, the flapper falls out. ### ⭐ Review *by Y***E on 30 January 2023* Too fragile. It got stuck open in just a few days after installed. I wouldn't recommend to anyone. --- ## 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.us/products/347403560-4-inch-plastic-inline-backdraft-damper-connect-exhaust-or-bathroom](https://www.desertcart.us/products/347403560-4-inch-plastic-inline-backdraft-damper-connect-exhaust-or-bathroom) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-28*