Lambro - 4" Aluminum Exhaust Roof Vent Cap with Screen, Damper, Collar 109R

The Lambro® 6-in. black ABS plastic exhaust roof vent with a molded 1.5-in. removable collar is ideal for venting through the roof. This vent is used for bath fan exhaust, range exhaust, and other general venting applications that require moist air and humidity to exit the home. It cannot be used to vent dryers. The exhaust vent allows for maximum exhaust airflow using a damper that prevents back drafts. A preinstalled screen prevents critters from entering the home through the vent when not in use. It is made from black ABS plastic material for durability and to maintain longevity. Check local building codes prior to installation. Should only be used on shingled roofs.

The Lambro® 8-In. 26-Gauge Paint-Grade Steel Wall Exhaust Hood Vent with Damper and 11-In. Pipe is ideal for venting through the wall. It features a spring-controlled opening and closing damper that prevents outside elements and air from entering the vent. The damper seals the vent opening when the bath fan, range hood, or microwave are not running. When the appliance operates, the exhaust air pressure pushes the damper open to let the exhaust air escape from the vent. The vent is for new and replacement installations over an existing 8-in. opening. It features an opening containing the 1/4-in. wire mesh screen with a net-free area of 28 sq. in., allowing for less back pressure. When the screen is removed, the net-free area of the unrestricted opening is now 40 sq. in. Constructed from 26-gauge paint-grade steel, this vent is built for durability and long-lasting performance. Make sure to check local building codes before installation. This is not for use with clothes dryers.

10-inch, 26-Gauge galvanized steel, round exhaust cap with damper for use with a Zephyr 10-inch, round duct. Backdraft damper design prevents air from reverse flowing through the ducts. Included is a built-in bird screen to help keep small animals from entering.