View on LOZ Suggested Retail: $139. 6 Inch Inline Duct Fan with Remote Variable Speed Controller, DEWALLIE Ventilation Exhaust Fan 312 CFM for Tent and Grow Room. DEWALLIE Inline Duct Fan come with a variable speed controller for easy speed adjustment by touch the screen of remote. This speed switch can reach up to 82ft range in open areas, penetrate walls and doors up to 49.2ft distance. This remote control offers two-speed settings, can reduce the fan speed from about 100% to 70% of the maximum output. DEWALLIE Inline Duct Fan with 65W power and 2550RPM motor speed, which can create powerful airflow up to 312 CFM; It adopts hydrodynamic fan blade design and high quality ABS material, which reduces airflow resistance, increases airflow, and effectively circulates air for room ventilation, indoor planting growing, etc.. 7 CALENDAR DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE IS ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.