The ceiling fans shall be of the Fantech Velocity Header Box
Series as designed by Fantech Pty Ltd. and be of the model
number shown on the schedule/drawing.
Impellers shall be forward-curved centrifugal and driven by
a squirrel cage motor with integral thermal protection.
They shall be fitted with high strength swing clips, removable
spigot, low resistance non-return backdraft damper and
removable diffuser. They shall include a plug and lead,
and its housing and diffuser be made of injected moulded
polypropylene.
They shall be tested to ISO5801: 2007 for air flow
and ISO3744: 2010 for noise.