Quiet Vent Fan Booster for 4 x 10 Smart Register - Increase Airstream (2 Pack)

About this item

• Quality Materials and Nice Workmanship: the vent boost is featured with anodized aluminum frame and thermoplastic casing with fan cover, safe and reliable; Motor contains dual ball bearing with a 67000 hours serve time
• Easy to Install: the air vent fan fits ONLY 4" x 10" register vents; Airstream: 140 CFM; Easy to mount on wall or floor vents in your home
• Silent AC Vent Fan: features stator blades, PWM motor for low noise, and integrated shock-absorbing sponge to keep noise levels under 16Dba
• Programmable LCD Display Controller: the air vent designed with clear LCD display, three simple buttons allow you to switch modes at will, and adjust temperature and wind speed flexibly
• Smart Register Vent: the smart register vent cover is designed to boost your existing AC or heater's airstream, to achieve a more balanced cooling and heating effect