Everbilt 4 in. Dia. Plastic Inline Exhaust Vent Draft Damper

This 4 in. Inline Vent Draft Blocker helps to prevent cold air from entering the home through the vent. The flap opens when the dryer or fan is operating to allow the air and lint to exhaust. The flap remains closed when the dryer or fan is turned off. Plastic construction with balanced damper comes fully assembled. Easily attaches to vent pipe and duct. Ideal for bathroom venting applications.

• For use with dryers and fans duct
• High-quality plastic construction offers long-term use
• Designed for preventing the air from entering the living space