Swing-out EC duct fan with high pressure and volume output, for space-saving installation in the duct. Housing made of impact- and corrosion-resistant plastic, light gray, with molded mounting bracket for easy installation on the wall or ceiling, as well as intake and exhaust nozzles corresponding to the standard pipe diameters. By loosening the clamps, the fan unit with terminal box can be rotated into any position and removed for maintenance and cleaning. Delivery includes dowels and screws. Optimized impeller for high pressure and volume output, made of high-quality plastic. Dynamically balanced for quiet operation. Driven by energy-saving, speed-controlled EC external rotor motor with moisture protection in protection class IP44 with maximum efficiency. Maintenance-free and free from radio interference, ball bearings. Integrated electronic temperature monitoring for EC motor and electronics. Stepless speed control with potentiometer PU / PA. Connection via spacious terminal box (IP44) on the outside of the housing, rotatable into any position.