Zehnder EVO 3 with Enthalpy Exchanger 500 1000 Nominal duct diameter 160 mm Nominal duct diameter 160 mm Operating height 505 mm With roof flashing Yes With pre mounted seal No Surface treatment cap Coated Vertical exhausting Yes Material of cap Steel Connection Duct end Lead flashing on all sides Yes Lamella model No Colour cap Red With storm collar No Suitable for suction Yes With gauze No Cover outer diameter 272 mm Material roof flashing Other Free passage 0 Suitable for use with roof pitches between 25 and 45 degrees The Zehnder EVO 3 supports flow rates of up to 300 m³ h and has the option to choose between an HRV or ERV (471 100 162) heat exchanger to suit your specific requirements The unit’s efficient motor and constant airflow technology ensure a balanced flow rate while minimizing energy consumption