This is a compact forward curved centrifugal fan box. It has a low mounting height which make it ideal for low height spaces or ceiling void installation.
The motor and wheel section can be tilted out for cleaning.
It's maintenance free with long life ball bearings and a galvanised sheet steel housing.
Essentially the same as the ISO acoustic fan boxes without the added sound insulation layer.
Still significantly quieter than the equivalent in-line tube fan, by about 25%.
A good inline extractor fan with excellent extraction for industrial and semi-commercial applications.
Comes with integral mounting bracket.

Extraction Rates:
100mm -- 290m3/hour.
125mm -- 320m3/hour.
150mm -- 340m3/hour.
200mm -- 695m3/hour.
250mm -- 1120m3/hour.
315mm -- 1540m3/hour.

These are a good no-nonsense powerful extraction fans. For quieter versions with added acoustic padding to cut down fan noise, have a look at the 'acoustic insulated fan' range.