... Compact Semiconductor Fan Heater, Industrial Electric Air Heater, CSL 028, 150W,250W,400WCompact designLow noiseDynamic heating upClip or screw ... fan, ball bearingair flow, free flow: CS 028: 13.8m³/h CSL 028: 45m³/h (230VAC), 54m³/h (120VAC) ... 90 % RH (non-condensing)Protection type / Protection classIP20 / II (double insulated)ApprovalsUL File No. E150057 (according to UL 499, intended ...