The Eco Silent 300 Ventilation device offers a powerful solution for air quality in medium -sized to large apartments. It is characterized by his Whisper -loving operation from, thanks to the newly developed sound fans. The device has a large heat exchanger that optimizes the air passage and minimizes the back pressure. The side nozzles are Ø 160, the expiry of the condensation is located on the bottom of the device (alternatively in the lid at ceiling assembly). The control takes place continuously via 0-10 V with pre-assembled rotary control. With a heat recovery of 89.2% (ECO Design Directive) and up to 98.2% under normal conditions, the device works extremely efficiently. It is also eligible. As a German mechanical engineering company ( Untroma ), we offer you comprehensive solutions a.