CF fans are used for installation where the air is slightly greasy or the air temperature is up to 120°C. Unit has a swing-out door for easy inspection and service. The direction of the door opening is from left to right. The fan is isolated from the casing via connectors and anti-vibration mounts. Forward-curved impellor made of galvanized sheet steel. Maintenance free, speed controllable, motors safety class IP55, On/Off safety switch. The casing is manufactured from double-skinned galvanized steel and is insulated with 50 mm mineral wool.