This register booster fan is designed to enhance airflow through wall and floor registers, drawing more air from HVAC ductwork to target spaces. It delivers 100 CFM airflow with 10 adjustable speeds, letting you customize airflow based on your needs.Powered by a 6W PWM DC motor, it's energy-efficient-cutting electricity bills and reducing environmental impact-while operating quietly at ≥18 dB, so it won't disturb your sleep. It also comes with a programmable LCD controller: built-in temperature sensor auto-adjusts airflow intensity to your set room temp, and the screen turns off automatically to save power and avoid bright light disruption.Controlling it is easy with the included remote, which works up to 26 ft away-letting you adjust speed or switch modes from bed or the couch. Specifically made for standard 4'' x 12'' registers, it comes with necessary installation screws, plugs in for instant use, and has an aluminum frame with a sleek finish that matches any room decor.