... Dynamic Compact Semiconductor Fan Heater, Industrial Electric Air Heater, CSL 028, 150W,250W,400WCompact designLow noiseDynamic heating upClip or screw fixingFan ... small size of the CS/CSL 028 makes it ideal for use in enclosures where space is at a premium. Technical Data ... temperatureAxial fan, ball bearingair flow, free flow: CS 028: 13.8m³/h CSL 028: 45m³/h (230VAC), 54m³/h (120VAC) service life ...