Modern Development — Supply Ventilation. She Works on the Principle of a Well -Known Fan that drives The Air, Cooling IT. In Contrast, The Well -Known Device, The Supply Installation Allows Air Temperature Himself, Which Enters the Room. Thus, The House Will Not only Be Well Ventilated, But Will Also Comfortable for Life in Both Summer and Winter. Product Ventilation Also Provides for Air Filtration and Prevents The Penetration of Noise Into the Room.