SPECIFICATIONS Fan size | Speed lots Amps WATS RPM CFM N.W. G.W. C.F. Low (Speed 1 0.06 3.23 31 4250 We fs) 16.6 kg 18.78 kg 84 in. Medium (Speed 5) 120 0.22 13.86 58 8544 36.52 Ibs) | (41.32 Ibs 3.48 cu. ft. High (Speed 9) 0.66 49.73 87 13002 | B6-521bs) | (41.