Lambro 1775L 4 Inch White Plastic In-Line Draft Blocker

Product Description

Lambro Industries - 1775L The Lambro white plastic in-line draft blocker is ideal for preventing outside air from entering into the home. This accessory can be installed in-line with the duct to the outside vent for clothes dryer exhaust, bath fan exhaust and other general venting applications. When the exhaust airflow is not active, the draft blocker prevents outside air from entering back through the exhaust unit.

• Opening / closing flap prevents outside from entering back through the duct
• Draft blocker is labeled for correct position when installing
• Installation clamps sold separately