This Ø 100mm / 4'' Heat Exchanger is designed for efficient transportation of hot air. It features an integrated thermostat with a temperature range of 10-30°C for precise temperature control. The powerful fan with a ball bearing motor ensures effective air circulation and heat distribution. The fan automatically activates when the temperature exceeds the desired range and turns off when the room temperature drops, conserving energy and ensuring comfort. A backflow flap mechanism prevents undesired mixing and ensures optimal air flow direction. It includes a 20 cm duct for optimized air passage and a through-wall mounting / ventilation grille for secure and aesthetically pleasing installation. Technical Specifications: Voltage: 220-240V / 50Hz, Power: 7W, Rotation Speed: 2000 RPM, Air Flow: 65 m3/h, Noise Level: 26 dB(A), Diameter: 103mm. Made in Europe.