Bath Fan Vent

The Lambro 4-inch brown plastic soffit continuous run bath fan exhaust vent is ideal for venting through the wall.

The vent features an opening and closing damper that prevents outside elements and air from entering. The damper seals the vent opening when the bath fan is not running because no exhaust air exits the vent. When the bath fan operates, the exhaust air pressure pushes the damper open to let the exhaust air escape from the vent.

A pre-installed metal bug screen stops external elements from entering the vent during operation. Certain states now mandate that a continuously running bath fan must include a screen along with the backdraft damper.

You can easily use the exhaust vent for new and replacement installations over an existing 4-inch opening. The vent frame comes with four screw holes to secure the vent and a caulk-friendly frame for completing the installation. The vent is a low-profile design that only protrudes a half inch from the side wall when installed.

The vent’s manufacturing material is polymer resin with a UV additive to prevent premature fading caused by sunlight. It would be best to prep the vent before painting it; we recommend plastic paint to paint the plastic vent effectively.

Make sure to check local building codes before installation.

Product features and benefits:

Bulk Pack
For new or replacement vent installations
Mounts over existing 4-inch openings
Flap is designed for maximum airflow and quiet operation
Opening and closing flap stays closed when not in use
Flap prevents outside elements from entering the vent
Low-profile design that only protrudes a half inch from the side wall
Accessible screw installation holes – caulk-friendly frame
Made of polymer resin material
UV inhibitor is used to help prevent the premature fading of vent
Plastic vent is paintable when prepped before painting – plastic paint recommended
Recommended for bath fan and general exhaust installations
Do not use for clothes dryer exhaust installations
Installation screws (not included)