With an impressive power of 800m³ and a temperature efficiency of over 90%, the ECO 800 living space ventilation offers efficient and energy -conscious ventilation. Ideal for: Multi -family apartments, classrooms, kindergartens - the ECO 800 ensures a healthy indoor climate by controlled supply of fresh air and effective dissipation of used air. She works extremely quietly and is easy to install. Flexible adaptation options: Connection diameter, construction direction and filter can be individually adjusted. Efficient heat recovery: High -quality plastic exchangers ensure high energy efficiency. (Aluminum or enthalpy exchanger available on request.) Stainless steel housing with 2x counter -current WT, 99% WRG, up to 400m³, expandable to the KWL Stainless steel housing with 2x counter -curr.