4-Inch Soffit Vent for Bathroom Fan Exhaust

4-Inch Diameter Collar (Rear-Mounted): Strategically positioned at the rear of the housing, this collar works with a precision-tapered bottom panel to optimize airflow and channel exhaust efficiently in one direction. Integrated Weep Hole: Prevents water buildup from condensation by allowing it to drain outside in the form of a drip.

Angled Gravity Damper: Automatically opens at 50 CFM or greater, ensuring compatibility with most standard bathroom exhaust fans (50–110 CFM). The damper closes when airflow stops to prevent backdrafts and improve energy efficiency.

Extended Nose Design: The vent’s nose projects beyond the fascia, ensuring humid air is directed away from the roofline — reducing the risk of moisture re-entering attic spaces. Front Hinged Grill: Keeps wildlife out of your ductwork and opens easily for maintenance and cleaning. Durable HDPE Construction: Engineered to withstand long-term sunlight exposure without becoming brittle.

Its chemical resistance also protects against acids, oxidants, and harsh solvents. Low-Profile Finish: With sleek lines and a discreet look, SoffitFlow blends seamlessly into any exterior while delivering high-performance ventilation.