VIVOSUN 6 In 440 ETL Certified CFM Inline Duct Vent Blower Ventilation Fan for Grow Tent

POWERFUL AIR FLOW: Heavy hitting blower with a fan speed of 2450 RPM for an air flow of 440 CFM. Moves air through your target location efficiently for optimal ventilation. RUNS SMOOTH AND QUIET: Powerful fan puts out only 50 dB noise level. DURABLE BUILD: Galvanized steel parts come factory painted to resist atmospheric corrosion from humidity. Tight, precise construction eliminates rattling and reduces wear and tear to give the element a long life.