About This Energy-Efficient Ventilation: High-efficiency EC motor uses up to 30% less power than AC fans; This 8-inch inline duct fan delivers strong airflow to keep your setup well-ventilated and stable while lowering your energy bills Strong Airflow for Superior Climate Control: Delivers up to 832 CFM with 3250 RPM speed; Its mixed-flow design offers powerful static pressure, ensuring quick air circulation and effective temperature and humidity control across indoor grow tents of all sizes Whisper-Quiet Operation: Powered by a high-performance EC motor, this exhaust fan runs at just 45 dB—far quieter than standard duct fans, offering strong airflow with minimal noise; Perfect for indoor setups near bedrooms, living areas, or other quiet spaces Precise Ventilation Control: The E12 speed controller provides 10 smooth speed settings for easy airflow adjustment; PWM tuning ensures precise ventilation based on your setup’s conditions, whether for seedlings, flowering plants, or high-heat environments Smart Upgrade Ready: Upgrade with the E42A Controller (sold separately) for full smart control; Connect to the Vivosun app to monitor and adjust fan settings remotely—switch between Auto, Standby, Manual, and Cycle modes anytime, anywhere Fast Setup, Versatile Use: With dual patented anchors, this booster fan installs in minutes and stays securely in place; Perfect for indoor cultivation tents, 3D printers, garages, or laser engravers, it improves airflow, temperature control, and keeps air circulating—an easy upgrade for indoor projects and DIY use Overview Brand : VIVOSUN Color : Black Electric fan design : Blower Power Source : ac Style : PRO Recommended Uses For Product : Air Circulation, Ventilating Material : Metal Number of Speeds : 10 Wattage : 75 watts Finish Type : Painted