Lambro EC-34400G-PG 4IN PG 26G GV HD VNT D

• Mounts over existing 4-in. openings ;• For new or replacement vent installations; recommended for clothes dryer or bath fan exhaust installations;• Made of 26-gauge paint grade steel for durability and to maintain longevity; matte gray finish is ready to paint;• Opening contains screen with a net-free area of 20.5 sq. in.;• 11-in. pipe for through-the-wall installation;• Designed for maximum airflow;• Opening and closing damper stays closed when not in use;• Damper prevents outside elements from entering the vent;• Requires installation screws (not included);