162mm (6.4in) to 437mm (17.2in) lengths. AC shaded type motor, temperature resistant aluminum alloy, ball or sleeve bearings. Maximum Pressure: 2.7mmAq (0.106inH2O) to 4.3mmAq (0.169inH2O), Maximum Air Flow: 24CFM (0.7m3/min) to 116CFM (3.3m3/min) CE, UL, TUV listed.