Lambro 4 inch (26 Gauge) Aluminum Wall Exhaust Hood Dryer Vent Dampe 11 inch Pipe Size:4" (26 Gauge) 11" Pipe Knob Diameter: 1-7/8 in

Knob Diameter: 1-7/8 in

10 to 19 insects with other brands

6'l x 16"w

Previous Model #: 0916

Liquid Rubber

Lambro 4 inch (26 Gauge) Aluminum Wall Exhaust Hood Dryer Vent Dampe 11 inch Pipe Size:4" (26 Gauge) 11" Pipe Knob Diameter: 1-7/8 inA damper in the 4 inch aluminum wall exhaust hood vent with 11 inch pipe prevent outside elements and air from entering the vent when not in use. The damper opens and allows the exhaust air to exit the vent through the sufficient opening which has a net free area of 20. 5 square inches, allowing for maximum airflow. Dryer Vent The Lambro 4 inch aluminum exhaust hood vent with 11 inch pipe is for venting through the wall. The damper seals the vent