Space-saving roof fan with extremely small dimensions. For ventilation. Attractive housing made of galvanized and powder-coated sheet steel. Cover made of aluminum. The cover is easily removable for cleaning work. Coated safety grille. Radial impeller with backward-curved blades. Protection class IP X5. Motor: Highly efficient EC motor. Continuously variable speed. Suitable for continuous operation. Robust motor with ball bearing, maintenance-free. Installation instructions: Thanks to its low weight, no crane or freight elevator is required to transport the EHD to the roof. Electrical connection: Connection to terminal block in the housing. Safety instructions: The fan may only be operated if the impeller is protected against contact in accordance with DIN EN ISO 13857 for free-suction fans. Article: EHD 31 EC, delivery volume: 1184 m3/h, speed: 3395 1/min, impeller type: radial, speed controllable: yes, reversibility: no, voltage type: alternating current, rated voltage: 230 V, mains frequency: 50 Hz / 60 Hz, rated power: 175 W, IMax: 1.5 A, protection class: IP X5, thermal class: F, pole-changing: no, mains cable: 3 / 1.5 mm2, installation location: roof, installation position: vertical, material: sheet steel, galvanized, color: silver, weight: 8.5 kg, weight with packaging: 9.3 kg, nominal width: 315 mm, width: 484 mm, height: 484 mm, depth: 358 mm, width with packaging: 555 mm, height with packaging: 575 mm, depth with packaging: 415 mm, conveying medium temperature at IMax: -20 °C to 60 °C, sound pressure level: 53 dB(A) / distance 3 m, free field conditions