Acoustic Cabinet Fans

acoustic cabinet fan

Range of in-line cabinet fans, manufactured from galvanised steel sheet with double thickness side panels internally lined with 17mm thickness of fireproof fibreglass acoustic insulation (M0).

All models incorporate backward curved centrifugal impeller fans, are dynamically balanced and supplied with circular duct connection flanges and remote terminal box.

Available, depending upon the model, with single phase or three phase motors in 4 or 6 poles.

All the motors are IP55, Class F (1) insulation, with thermal protection (2).
Electrical Supply:
Single phase 230V-50Hz.
Three phase 230/400V-50Hz

Three phase motors are speed controllable by an inverter.

(1) Air stream temperature limits -40oC to +70oC.
Models /4-9000 and /6-6000to /6-17000 suitable for usage in environments up to +40oC.
(2) Except models 6000 to 17000.

Check out our Industrial fans page for a complete overview of our industrial fan catalogue.

Acoustic Backward Curved Centrifugal Fans

acoustic backward fan

Cabinet fans manufactured from galvanised steel sheet with double thickness side panels internally lined with 25mm thickness of fireproof fibreglass acoustic insulation (M0).

Circular duct connection flange on the inlet. KABT incorporates direct drive backward curved centrifugal impeller with motor fitted outside of the air stream.
Three phase motor IP55.

4 pole
Electrical supply:
Three phase motor 230/400V-50Hz, speed controllable by inverter.

Additional information
Working temperature from -20oC to 100oC.


acoustic applications

SizePhaseRefPerformance (m3/hour)
2001 PhaseCVAB/4-700/200690
2003 PhaseCVAT/4-700/200690
2501 PhaseCVAB/4-1200/2501150
2503 PhaseCVAT/4-1200/2501150
2501 PhaseCVAB/4-1500/2501520
2503 PhaseCVAT/4-1500/2501520
3551 PhaseCVAB/4-2600/3552600
3553 PhaseCVAT/4-2600/3552600
3551 PhaseCVAB/4-3800/3553750
3553 Phase CVAT/4-3800/355 3750
4001 PhaseCVAB/4-5600/4005600
4003 PhaseCVAT/4-5600/4005600
5003 Phase CVAT/4-9000/500 8800
Model Speed (RPM)Maximum absorbed power (W)Maximum absorbed current (A)Maximum absorbed volume (m3/h)Inlet*Radiated*Outlet*Weight (Kg)Price (£)

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What is an industrial exhaust fan?

There are many types of industrial fans. There are two main types of fans; axial fans and centrifugal fans. Axial fans move air in one direction and centrifugal fans move outwards. All types of fan can be used as industrial exhaust fans depending on the application. Usually, when we incorporate the word ‘industrial’ to a fan unit it means that it is not designed or is too big for a domestic application.

How does an industrial extractor fan work?

As explained above, Axial fans move air forward and backwards, whereas a centrifugal fan moves air outwards, like a centrifuge.

Do extractor fans need to vent outside?

Extraction fans do exactly what they say on the tin; they extract air, which means they take it away from an environment, a room, a factory or a chimney. Depending on the pollution factor, most extract to atmosphere, very often through filters and sometimes into cyclones where the dust or pollutants can be captured.

How long should an extractor fan stay on for?

How long an extractor fan should stay on for is entirely dependent on the type of fan and application. All fan units will have a point at which they will fail or stop due to general wear and tear.

However, with the correct servicing, a non-sealed unit fan can be looked after through regular careful maintenance and may be able to run 24 hours a day 7 days a week with the exception of the scheduled maintenance stops, where engineers can repair or replace any worn parts.

Do industrial extractor fans use a lot of electricity?

The words ‘industrial extractor fans’ covers a very broad spectrum of fans from a small industrial kitchen or a battery store right through to something that might be used in huge steelworks or a working mine, or even an oil rig. Thus, depending on the application and size of the project, the fan could or could not use a lot of electricity.

What type of extractor fan do I need?

The type of extractor fan you need depends solely on your application. If you need to extract or input air into a building directly through the wall or the roof, you will need a wall-mounted or roof-mounted axial fan unit. If you need to extract through ducting for relatively low pressure or medium pressure applications you would often use a duct mounted fan unit, such as a short cased axial fan and a high-pressure contra-rotating axial fan, or a long cased axial fan or a bifurcated fan unit (which helps protect the motor against heat and nasties in the air-stream as it’s mounted in a ‘pod’ outside of the air-stream.) Then there are centrifugal fan units available for a number of applications, of which there are many kinds.

How do I know what size extractor fan I need?

The size of extractor fan you’ll need will be entirely dependent on the application.

Will an extractor fan cool a room?

An extractor fan will cool a room, as long as the air being extracted is warmer than the air coming in. Air and water act in very similar ways. If you pull the air out of a room the old warm/stale air will be replaced with new fresher air as long as the room is not totally airtight; it will simply fill the void that has been emptied. Like filling a bucket from a stream, there’s never a ‘gap’ in the water where the water used to be when you took the water out with your bucket.

Can I replace an industrial extractor fan myself?

You can replace an industrial extractor fan yourself if it it is small enough and you are qualified.

Is it bad to oversize an industrial extractor fan?

It is only bad to oversize a fan unit in a balanced system design where a centrifugal fan may be able to overrun and increase the motor current beyond its full load, thus causing it to burn out.

In most standard applications ‘more’ is better, because it is easier to slow a fan unit down than it is to take it over its natural speed. As long as you don’t slow it down too much to keep itself cool enough to operate correctly.

How much does it cost to install an industrial extractor fan?

The cost to install an industrial extractor fan depends on what type of fan and application you choose.

For example, an ATEX plate mounted fan unit for a paint extract booth could take a group of engineers 2 hours to fit along with the filters. Given the ATEX lighting and other things to take into consideration were already installed, it would probably cost about £150.00. Whereas the cost of installing the turbines at Dinorwig Power Station, along with the rest of the installation, cost £425 million back in 1974.