Conveying small to medium air volumes with high resistance. Ideal for refurbishments and retrofitting due to external installation. Optimum efficiency, low maintenance costs. Radial impellers made of plastic, with backward curved blades. Connection piece on the intake side for installation on ventilation ducts. Integrated sealing flap. Motor: EC motor with ball bearings, suitable for continuous operation. Speed controllable. Thermal overload protection. Protection class IP X4. Electrical connection: Connection to terminal strip in the housing. Safety instructions: The fan may only be operated if the contact protection of the impeller is guaranteed in accordance with DIN EN ISO 13857 for free-intake fans: AWV 10/2 EC, flow rate: 347 m3/h, speed: 3395 1/min, impeller type: radial, speed controllable: yes, reversible: no, SEC average: -26 kWh/(m2*a), energy efficiency class: C, voltage type: Alternating current, Rated voltage: 230 V, Mains frequency: 50 Hz / 60 Hz, Rated power: 119 W, IMax: 0.7 A, Protection rating: IP X4, Thermal class: F, Installation location: External wall, Installation position: Vertical / horizontal, Material: Sheet steel, galvanised, Housing material: Sheet steel, powder-coated, Colour: White, Weight: 5.1 kg, Weight with packaging: 5.4 kg, Nominal diameter: 100 mm, Width: 260 mm, Height: 355 mm, Depth: 131 mm, width with packaging: 275 mm, height with packaging: 385 mm, depth with packaging: 175 mm, fluid temperature at IMax: -20 °C to 60 °C, DC motor: false.