Made of galvanized steel, these dampers prevent air leakage into your fan setup. They are easy to install, fit directly onto the ducting, and prevent a backdraft of air when the fans are switched off.
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Made of galvanized steel, these dampers prevent air leakage into your fan setup. They are easy to install, fit directly onto the ducting, and prevent a backdraft of air when the fans are switched off.
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![Davis Quick Reference Boating Guide Card [128]](https://www.gearoutdoorr.shop/image/davis-quick-reference-boating-guide-card-128_371naD_300x.webp "Davis Quick Reference Boating Guide Card [128]")
