Product Info Catalog Plumbing Stove Pipe & Chimney Dryer Vents Dryer In-Line Damper, 4 x 4-In. Dryer In-Line Damper, 4 x 4-In. Request a Quote UPC: 39899017752 SKU: 753434 Model Number: 1775L In-line draft blocker, clothes dryer in-line damper 4" x 4", prevents outside air from entering the house through the clothes dryer.
