Prevents cold air from entering the house through the clothes dryer. Flap opens when dryer starts, then flap closes when dryer stops. To install, slide ducting over draft blocker collar and attach with a clamp (clamp not included). Press other end of draft blocker into aluminum vent pipe as a friction fit. Made of durable plastic. Retail bag.

Manufacturer No. DB4ZW
Type: Flap
Material: Durable Plastic
Pkg Qty: 1
Package Type: Box