Clipsal Mistral Expressaire Ceiling Mounted Exhaust Fan 250mm 800m3 Hr - 6220-0
The automatically retracting fan blades on the Expressaire provide superior performance over similar size exhaust fans. While the fan is switched off, the blades are closed to shut out insects and prevent back draught. When switched on, they open quickly and silently by centrifugal force
Ceiling Mounted Exhaust Fans, Did You Know that if the noise of the fan changes (or sounds like it's working harder) when you close the door to the room, that you may not have enough return air. This can cause the fan to wear out early, Note: 6220-0 Expressaire complies with the energy efficiency requirements of the Building Code of Australia (BCA), 250mm Expressaire auto retract blades, 290mm diameter cut out, 800m³/h, BCA.