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Axial Roof Extractor fans with adjustable blades cover a wide capacity range due to their large variation possibilities with hub relation, number of blades and blade angle. With the Rosenberg and series pressure increases up to 830 Pa and volumes up to 85000 m3/h can be realized. The allowed temperatures of the ventilated mediums are from -30deg C up to +40deg C as a standard. The casing with flange master-gauge for holes according to DIN 24154 line 2 ensure a simple connection to the duct systems. The standard air flow direction is pressured over the motor. To reverse air flow direction blade position must be rotated 180deg C and the direction of motor rotation must be changed. The fans are suitable for vertical and horizontal installation.
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