Central Ventilation Box Helios ZEB EC The three intake and air outlet nozzles are designed for pipes of the NW 100 and 125 mm. A suction nozzle is designed for pipes of the NW 100, 125 and 160 mm. Ideal in the low-energy house. In the single-family house as well as in apartment and multi-storey residential units for ventilation via a common main line how pictured without any other items or positions shown Content, condition and completeness are unchecked Function is untested