The commercial kitchen exhaust fans shall be of the Systemaire series as designed and manufactured by Fantech Pty Ltd and be of the model numbers shown on the schedule/drawings.
Impellers shall be made from high performance injection moulded composite material. They shall be mixed-flow design and driven by speed-controllable motors.
The cowl shall be of the vertical discharge type and manufactured in aluminium. The windband shall be removable to provide easy access for cleaning the impeller and drainage channel.
All models shall be fully tested as a complete assembled unit to ISO5801:2007 for air flow and ISO3744:2010 for noise.