with square wall plate
Casing made from galvanized and plastic-coated steel, series plate
Impellers with aerodynamically shaped blades, up to size 300 made
from galvanized steel, from size 315 up to size 630-6 made from
plastic, from size 630-4 from die-cast aluminium, mounted onto a
speed controllable external rotor motor. The fan is balanced on two
levels according to quality level G 2.5 DIN/ISO 1940.
Closed motor, protection class IP 44/54 with protection against
humidity and thermal contacts wired in windings for motor
protection from size 315.
Maintenance free ball bearings closed on both sides, sealed for life.
Electrical connection through terminal box (not connected) in IP 44.