A weak vent in a bedroom or home office usually means the HVAC system's airflow isn't reaching that room efficiently, this register booster fan drops straight into a standard 4 x 10 inch floor or wall register to push more of that conditioned air where it's needed. The 6W DC motor moves up to 100 CFM across 10 adjustable speeds while staying whisper-quiet at 18 dB or above, so it won't disturb a quiet room. A programmable LCD controller reads room temperature and automatically adjusts fan intensity to save power, and the included remote controls speed and mode from up to 26 feet away. The aluminum frame installs with the provided screws and plugs straight into a wall outlet, no ductwork or rewiring required. At 1.5 lbs, this white booster fan is light enough to swap into an existing register in minutes.