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🔧 Keep your airflow flawless and your space comfortable—neverest® has your ducts covered!
The neverest® RK 4" Professional Backdraft Shutter Damper Connector Duct is a robust HVAC accessory crafted from galvanized steel and aluminum. Designed to prevent unwanted air backflow, it features an automatic flap with a smooth spring and foam strip for silent operation. Suitable for metal ducts only, it installs easily in both horizontal and vertical orientations and withstands temperatures from 14 to 140°F, making it a versatile solution for air conditioners, dryers, exhausts, and more.




| ASIN | B011INHF5A |
| Best Sellers Rank | #72,933 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #119 in HVAC Ducting |
| Brand Name | neverest |
| Color | Silver |
| Connector Type | Flange |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,085) |
| Exterior Finish | Aluminum |
| Item Dimensions | 22.44 x 20.47 x 15.75 inches |
| Item Highlight | Backdraft Shutter Damper Connector Duct Fits Only with Metal Ducts |
| Item Weight | 140 g |
| Manufacturer | neverest |
| Manufacturer Part Number | 40545030039031 |
| Manufacturer Warranty Description | 2 years |
| Material Type | Galvanized Steel |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Size | 100 mm |
| Thread Type | CW |
| Unit Count | 1 Count |
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