Suggested Retail: $17.97. neverest RK 6 IN Professional Backdraft Shutter Damper Connector Duct - This backdraft exhaust fan damper from neverest is suitable for both flexible and non-flexible ventilation ducts. It is designed for exclusive installation in metal ducts. The damper offers versatile applications for air conditioners, dryers, exhaust and extractor hoods, heating ducts, vents, and various HVAC systems. It features automatic operation with a smooth-running spring and an internal foam strip to prevent blade rattling. The damper is made of durable galvanized steel with an aluminum flap, a stainless steel axis, and a spring. It can withstand temperatures from 14 to 140 FT. Brand: neverest Model: ‎4054503005327 -- LOT STICKER: TCE-BOX-BOXTCEE0003-ITEM-d7a210b5___LPNNG4W3LYJXR neverest RK 6" Professional Backdraft Shutter Damper Connector Duct Fits Only with Metal Ducts -- SIZES ARE ESTIMATED. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.