Register Booster Fan for 4" x 10" Register Holes

About this product

• MEASURE Your Vent Size Before Purchase: ONLY Fits Standard 4" x 10" Duct Openings | Rear Casing: 3.94" x 9.61" | Dual 92 mm PWM Fans | Airflow Up to 150 CFM | Noise Level as Low as 18 dBA | USB Powered. Features a low-voltage USB power design with no complicated HVAC wiring or hardwired installation required. Simply connect to a USB adapter (not included), power bank, laptop, or wall outlet for flexible placement and easy setup
• Smart Thermostat Airflow Control: Equipped with a built-in smart thermostat control and temperature sensor, the VANSHINIEER register booster fan automatically turns on and off based on your selected temperature settings. Designed to help reduce hot and cold spots throughout your home, making bedrooms, basements, offices, and other problem areas more comfortable year-round. A built-in memory function automatically restores your previous fan speed, vent angle, and temperature settings after restarting
• Manually Adjustable Louver & Closable Vent Design: Direct airflow exactly where needed with 4 adjustable vent angles (10°/30°/60°/90°) using the built-in louver controls. The closable vent outlet helps reduce dust buildup, prevents small objects from falling into ducts, and keeps vents cleaner when not in use while maintaining a streamlined appearance
• Quiet 10-Speed Performance with Multiple Modes: Customize airflow with 10 adjustable fan speeds, Summer Mode, Winter Mode, Fan-Only Mode, and convenient 2H/4H timer settings. Operating as low as 18 dBA in Sleep Mode, the air vent fans provides quiet airflow support for bedrooms, nurseries, home offices, and other low-noise environments
• DIY Aromatherapy for Bedroom Comfort: Add your favorite essential oils to the integrated aroma compartment to create a more refreshing room atmosphere. The included remote control allows convenient adjustment of fan speed, operating modes, timer settings, and airflow direction. The LCD display shows real-time temperature and fan speed, while the auto-dimming screen helps reduce bright light at night
• Mode Icon Reminder: Please follow the actual product display if the printed manual shows different Summer/Winter mode icons.

From the Amazon listing, fetched 29 September 2026. Amazon’s words, not ours.