Fan:
- Sheet steel casing.
- Backward-curved impeller made of galvanised sheet steel. except models 242-248-254-260-640-645-650 with cast aluminium impeller.
- Hexagonal profile acoustic attenuator built into the fan intake nozzle. Its design permits the adjustment of the air flow at the fan entrance.

Motor:
- IE3 efficiency motors for powers equal to or greater than 0.75kW except single-phase. 2-speed and 8-pole.
- Class F motors with ball bearings and IP55 protection.
- Multi voltage motor. special design valid for 220/380V 60Hz. 254/440V 60Hz. 265/460V 60Hz. 277/480V 60Hz.
- Maximum temperature of air to be carried: -20 ºC.+ 120 ºC.

Finish:
- Anticorrosive finish of polyester resin polymerised at 190 ºC. previously degreased with phosphate-free nanotechnological treatment.

On request:
- Special windings for different voltages.
- Fan prepared for air transmission of up to 250 ºC.
- Stainless steel fan.
- ATEX-certified Category 2.