SPECIFICATIONS Fan size Speed Volts Amps Watts RPM CFM N.W. G.W. C.F. i Lou 20 0.2 10.36 64 1687 1018 kg 11.21 kg N ; Medium 0.35 30.28 118 3464 (22.401bs) | (24.661bs) | 1L High 0.47 56.