Check the listing for details. Quiet Register Booster Fan 10-Speed Control Smart Vent 4x12 inch Heating/Cooling. Color: White, Condition: New. Listed at 39.99 USD. Quiet Register Booster Fan 10-Speed Control Smart Vent 4x12 inch Heating/CoolingAbout the product:EFFECTIVE TEMPERATURE CONTROL: The Register Booster Fan is the perfect addition to your HVAC system, improving airflow and enhancing indoor temperature regulation; It helps distribute heated or cooled air more efficiently throughout your home or office, creating a more balanced and comfortable environment; Designed to fit standard 4" x 12" vent holes, it accommodates vent openings between 4"-5.2" wide and 9.7"-12.7" long; Be sure to measure your vent openings to ensure proper fit POWERFUL MOTOR: Equipped with a 5.5W PWM-controlled DC motor with dual ball bearings, this fan ensures precise speed control, energy efficiency, quiet operation, and long-lasting performance; Its 120 CFM airflow rating is perfect for pushing air through duct systems, even in areas with high static pressure; The fan runs quietly, producing less than 18 dB of noise, providing a peaceful and restful environment for sleeping SMART PROGRAMMING: The smart booster fan features a programmable LCD controller and a high-precision temperature probe to monitor duct temperature and automatically adjust based on your set cooling or heating preferences; To avoid disturbance at night, the screen can be turned off while the fan continues to operate; Even when your heating or cooling system is off, the fan will keep running to maintain the room's temperature balance; Screen lock and memory backup prevent accidental adjustments or power loss issues 10 ADJUSTABLE SPEEDS: With 10-speed settings, you can easily customize airflow to meet your comfort needs; The included remote control lets you adjust fan speed and temperature effortlessly from the comfort of your couch or bed; The remote has an effective range of up to 16.4 ft, offering maximum convenience EASY INSTALLATION: The premium alloy aluminum frame, ABS rear cover, and CNC-machined corners give this booster fan a sleek and elegant look; Its compact design takes up minimal space while delivering powerful performance; The fan can be mounted on the floor or wall, though ceiling installation is not recommended; For larger rooms, multiple fans may be needed to achieve optimal airflow Product & Package Information:Material: Alloy Aluminum Frame, ABS Cover Remote Control Range: 16.4ft Power: 5.5W Duct Opening - Width: 4"-5.2" Noise: 18 dB Duct Opening - Length: 9.7"-12.7"Airflow Speed: 120 CFM Product Weight: 1.3 lb Fan Blade Size: 90mm Product Dimensions: 13.8'' x 5.5'' x 2.1''