--- product_id: 121377901 title: "neverest® RK 5\" Professional Backdraft Shutter Damper Connector Duct Fits Only with Metal Ducts" brand: "neverest" price: "฿1596" currency: THB in_stock: true reviews_count: 13 url: https://www.desertcart.co.th/products/121377901-neverest-rk-5-professional-backdraft-shutter-damper-connector-duct-fits store_origin: TH region: Thailand --- # 5" size Temperature range: 14-140°F Galvanized steel neverest® RK 5" Professional Backdraft Shutter Damper Connector Duct Fits Only with Metal Ducts **Brand:** neverest **Price:** ฿1596 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate Your Airflow Game! ## Quick Answers - **What is this?** neverest® RK 5" Professional Backdraft Shutter Damper Connector Duct Fits Only with Metal Ducts by neverest - **How much does it cost?** ฿1596 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/121377901-neverest-rk-5-professional-backdraft-shutter-damper-connector-duct-fits) ## Best For - neverest enthusiasts ## Why This Product - Trusted neverest brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **⚙️ Durable Design:** Crafted from galvanized steel and aluminum for long-lasting performance. - • **🔒 Secure Your Space:** Prevent unwanted air ingress with our reliable backdraft damper. - • **🔄 Automatic Operation:** Flap opens and closes seamlessly at low air volumes for optimal airflow management. - • **🌟 Versatile Installation:** Easily fits into both horizontal and vertical ducts for ultimate flexibility. - • **🌡️ Temperature Resilience:** Withstands extreme temperatures from 14°F to 140°F, ensuring year-round efficiency. ## Overview The neverest® RK 5" Professional Backdraft Shutter Damper Connector is engineered for superior air management in HVAC systems. Made from durable galvanized steel and aluminum, this damper effectively prevents unwanted air from entering your space while ensuring smooth operation across a wide temperature range. Its versatile design allows for easy installation in various duct orientations, making it a must-have for any professional looking to optimize their ventilation system. ## Description neverest® RK 5" Professional Backdraft Shutter Damper Connector Duct Fits Only with Metal Ducts ## Features - Make sure this fits by entering your model number. - The backflow damper prevents the ingress of cold or warm air and wind from entering through the ventilation duct. The 5 inch Backdraft damper is made out of a Galvanized steel, the flap leaves are made of aluminum, while the Axis and spring are made of stainless steel, 3.5 inches deep and can withstand temperatures from 14 to 140 °F - Designed for use in air conditioners (AC), dryers, exhaust, extractor or range hoods, heating ducts, vents and other HVAC applications - The backflow flap opens and closes automatically at low air volumes. It has a smooth-running spring and an internal foam strip to keep the blades from rattling and can be installed horizontally or vertically - INSTALLATION: The backflow flap is installed by inserting it into the ventilation pipe until it stops. The position of the spring should be horizontal for horizontal installations so that it can open and close optimally. The Backdraft shutter is installed so that the damper blades open only in the outflowing air direction. - Back 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. ## Images ![neverest® RK 5" Professional Backdraft Shutter Damper Connector Duct Fits Only with Metal Ducts - Image 1](https://m.media-amazon.com/images/I/61R-zDPpQKL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Seals tightly when closed *by R***G on Reviewed in the United States on October 5, 2022* Easy to install - works well to keep the back draft out of our condo's dryer when not in use. ### ⭐⭐⭐⭐ Trim shaft, weaken spring first *by J***. on Reviewed in the United States on December 18, 2021* The media could not be loaded.  Shaft sticks out about 1/16 ea side of insert, so I had to trim flush since the fit is skin tight inside standard vent duct on a mobile home rent trailer. I should have weakened the spring before installing since full power fan struggles to open against spring pressure even AFTER ensuring gaps taped with flashing tape. I should have used Hardcast tape ( gooey alum) since I didn't thoroughly clean the area there. The regular stuff isn't stuck well, but I'm thinking the fan motor is due for retirement. It's been getting louder last couple years, and took it out,cleaning w/oil spa didn't do any noticeable good. Sure it works, but it's noisy and underrated and im sure next renter would rather not have a jank hood motor hollarin all thru din. No sense in half measures ol W.W. right about a lot of stuff xsept his biz model one of many others none ive known ended well in that genre. Anyway, hope u learned at least trim the shaft flush to fit inside duct and cavity needs sealed good if the motor has any chance of opening the check against the spring. I'd weaken the spring if I could groundhog day it, but for now ima order another motor since I'm looking for a top shelf tenant in this turd box and that means minimal janky noises or fixes that look daf. It's a nice turd box tho so i put in air fry oven, bidets, bt showerhead. WM fire sale'd at $10/ea so i see it as cheap turd polish loaded the cart Got back and one tenant lit up big smile 😀 bidet!!yay! Totally worth and still 20 of each in my truck. Trailer park Santa feeling warm n fuzzy except wearing old denim bibs and muddy boots. Proper attire all things considered. ### ⭐⭐⭐⭐ Useful addition to exhaust fan *by S***N on Reviewed in the United States on March 2, 2022* Greatly reduced cold air flow into bathrooms through the exhaust fan. Had to install directly onto exhaust fans-not the easiest thing to do. I installed two of the same dampers (both said RK-4 on the box)-the spring tension was quite different. I am hoping damp air does not cause long term corrosion problems. ## Frequently Bought Together - neverest® RK 5 inch Backdraft Shutter 125mm Ducting Round Connector Galvanized Steel with Rubber Sealing Fits Only with Metal Ducts - NEBURORA 118-140mm Hose Clip Adjustable 304 Stainless Steel Duct Clamps 4 Pack Worm Drive Hose Clamp Clips 5 inch Diameter Fuel Line Hose Pipe Clamps for Dryer Vent Air Duct Automotive Plumb --- ## 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.co.th/products/121377901-neverest-rk-5-professional-backdraft-shutter-damper-connector-duct-fits](https://www.desertcart.co.th/products/121377901-neverest-rk-5-professional-backdraft-shutter-damper-connector-duct-fits) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-27*