About This

BOOSTS AIRFLOW TO UNCOMFORTABLE ROOMS: The Suncourt Flush Fit register booster fan quietly boosts airflow by up to 85%, overcoming back pressure to pull extra air into rooms that are too hot or cold—without the need for any HVAC modifications. It provides up to 132 CFM maximum boosted air.
ULTRA-QUIET OPERATION: This powerful vent fan booster was engineered and assembled in the USA for minimal noise. It features 5 adjustable fan speeds, providing up to 132 CFM for customized airflow and maximum comfort.
EASY INSTALLATION: Fits any 4" x 10", 4" x 12", 6" x 10", or 6" x 12" floor or wall register—measure the interior of your vent duct opening (not the cover) to ensure a proper fit. No tools required, just plug it in with the 6-foot power cord.
AUTO ON/OFF: Suncourt’s patented smart technology automatically turns the vent fan on/off when the HVAC system is heating or cooling, without the need for manual or seasonal settings.
DURABLE & RELIABLE: Delivering trusted performance since 1988, Suncourt’s register booster fans are backed by a 12 month warranty.