The RAMFAN UB20 8-inch (20-cm) blower/exhauster delivers the highest CFM in its class. The double wall polyethylene casing and polypropylene blade are designed to operate under heavy workloads and the most demanding conditions. The 1/3 hp, 115 VAC motor is ultra-quiet, only 74 dB. The 25-foot (7.6-m) duct is protected by the Quick-Couple™ Canister that attaches to either end of the RAMFAN, allowing the unit to quickly convert from discharge to suction. The 60 Hz domestic model is CSA rated for outdoor use. The 230 VAC, 50 Hz international model has CE approvals. Be sure to ask about our complete line of RAMFAN products available.