Dryer In-Line Damper, 4 x 4-In.
In-line draft blocker, clothes dryer in-line damper 4" x 4", prevents outside air from entering the house through the clothes dryer.
We Also Recommend
Morton Clean and Protect Plus Rust Defense 40 Lb. Water Softener Salt Pellets
18-In. Stainless Steel Braided Water Heater Connector, Lead-Free, 1/2 x 3/4 FIP