SPECIFICATIONS Fan size Speed lots Amps Watts RPM CFM N.W. G.W. C.F. Low 0.22 10.10 a7 1830 10.1kg 11.28 kg 52in. Medium 120 0.41 35.09 118 3847 {22.22 Ib) (24.82 Ib) 240 cu. ft. High 0.54 64.