Flexible sheet seals metal register vents to help improve heating or cooling efficiency. Can be painted, stenciled or wall papered to match decor. Easily cut to fit vent size. Size of 8 in W x 15 in L. 3/Pack.
The dryer vent seal prevents outside elements and air from entering the vent when the dryer is not in use. When the dryer is in use, the dryer exhaust air pressure pushes up the floating damper. The exhaust air escapes from the vent's bottom. When the dryer stops, the damper drops back down to keep outside elements from entering the vent. Made of ABS plastic, the dryer vent seal mounts easily over an existing 4 in vent pipe and can be painted.