Versions: EFR 10, EFR 12: 1 speed, installation in ventilation ducts DN 100 and DN 125. Extremely small dimensions for installation in confined spaces. Ideal for renovation. Radial impellers with backward curved blades. Connection pieces on the suction and pressure sides, for direct installation in ventilation ducts. Protection class IP 20. Motor: Thermal overload protection as standard. Robust motor with ball bearing, maintenance-free. Installation instructions: Installation possible in any position. With mounting plate for wall and ceiling mounting. Article: EFR 12, delivery volume: 255 m3/h, speed: 2392 1/min, impeller type: radial, rated voltage: 230 V, mains frequency: 50 Hz, rated power: 53 W, PMax: 53 W, IMax: 0.24 A, protection class: IP 20, mains cable: 3 / 1.5 mm2, installation location: ceiling, installation position: vertical / horizontal, material: sheet steel, galvanized, housing material: sheet steel, galvanized, color: silver gray, weight: 4.2 kg, weight with packaging: 4.65 kg, fan can be swung out: yes, nominal width: 125 mm, width: 241 mm, height: 122 mm, depth: 448 mm, width with packaging: 265 mm, height with packaging: 170 mm, depth with packaging: 470 mm, Conveyor temperature at IMax: -20 °C to 50 °C, ambient temperature: 50 °C, sound pressure level: 37 dB(A) / distance 3 m, free field conditions, DC motor: false