FISCHBACH® Roof Top Units have been developed especially for use in effective air-extraction and exhaust systems. The whole range is made of weatherproof material with 40-mm-thick insulation, and well as with galvanized bird screens. Above all, EC-Motor version with integrated pressure control achieves even greater efficiency levels than are seen in commercially available models. Low noise level through the FISCHBACH® Disc Rotor Motor/EC Disc Rotor Motor with double sound decoupling.