Axial Roof Units - RSC Series



  • The range covers sizes 200 - 1000mm diameter with Elta axial flow impellers.


  • The AMS range of roof units are precision manufactured from pre-galvanised sheet metal.
  • The wind band and shutter have been aerodynamically designed to produce the minimum possible resistance to airflow whilst offering full protection.


  • Totally enclosed IP55 tested to BS4999 and BS5000 and suitable for exposure to weather.
  • Standard voltages are 400 volt and 230 volts nominally.
  • Single-phase IP55 speed controllable motors are available.

  Special features

  • Refer to p D-2. High temperatures smoke spill fans are available.
  • Special voltages, speeds and classes are available on request.

Selection procedure

  • The units are selected of the standard AMS axial flow curves allowing a K factor of 1.0 for the RSC.


Model RSC A B C D
315 405 500 355 405
400 505 600 450 500
500 605 650 560 610
560 705 700 630 680
630 760 700 710 760
710 850 850 800 860
800 900 850 900 980
900 1000 960 1000 1080
1000 1120 960 1120 1200


RSC 315 RSC 400 RSC 500 RSC 560
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RSC 630 RSC 710 RSC 800 RSC 900
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RSC 1000    


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The Multiflow TDE 500 to 710 range consist of fully cased, cylindrical models with circular mounting flanges at both ends and a wired terminal box.


The Mini Centrifugal Roof Fan series are the new type roof extract units available in 2 sizes and suitable for vertical and horizontal installation. The low noise external motor and high efficient backward bladed impeller meets the requirement of efficient ventilation in residential, commercial and light industrial applications.

Future 150

The Decor Series can be wall or ceiling mounted and is designed to exhaust stale and moist air from bathrooms, toilets, laundries etc. They are also suitable for ventilating all types of small or closed areas.

TD Silent

The Silent Series is a low profile mixed-flow in-line fan that produces low noise when in operation. It does this through a specifically designed perforated internal skin that directs sound waves produced inside the fan to a layer of sound absorbent material.


The low-profile TD-EVO 250 and 315 in-line mixed-flow fans for circular ducts have a unique design where the support bracket allows the motor and impeller assembly to be fitted or removed without dismantling the adjacent ducting.


AMS started trading late in 1994 ...


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