Centrifugal Scroll Fans

Commercial Centrifugal Scroll Fans, forward curved and backward curved impellers, different versions and sizes of double and single inlet fans available. Often classified by two numbers, eg. 10/10, 9/9 etc. This indicates the size of the scroll/squirrel cage impeller. ie. 10 inches long, 10 inches diameter. Closed motor or external rotor versions advised for dirty air.
Also known as snail fans.
These need an enclosure to operate and are normally at one end of a system. For inline commercial fans, see our Centrifugal & MixVent Fans or industrial section. for larger units.

Displaying 49 to 54 (of 54 products)
RD31S-4DW.6Q.AL - 121303  (Three Phase)
RD31S-4DW.6Q.AL - 121303 (Three Phase)
£ 1,456.92
RD31S-4DW.6Q.AL Double inlet centrifugal fan with spiral housing. Type: RD31S-4DW.6Q.AL ...
RD31S-4EW.6Q.AL - 122296 (Single Phase)
RD31S-4EW.6Q.AL - 122296 (Single Phase)
£ 1,456.92
RD31S-4EW.6Q.AL Double inlet centrifugal fan with spiral housing. Type: RD31S-4EW.6Q.AL ...
RD35S-4DW.6W.3L - 122297  (Three Phase)
RD35S-4DW.6W.3L - 122297 (Three Phase)
£ 1,387.00
RD35S-4DW.6W.3L Double inlet centrifugal fan with spiral housing. Type: RD35S-4DW.6W.3L ...
Rosenberg DRAD-224-4 Double Inlet High Efficiency Radial Fan
Rosenberg DRAD-224-4 Double Inlet High Efficiency Radial Fan
£ 555.00
Rosenberg- Centrifugal fans with forward curved impellers, Types ERA.../ DRA... 400 volt 3 phase 50 Hz , 0.87kW 1210RPM Single and double inlet casings, made from galvanized steel, with spiral scr...
Torin fan  -  178206-A-00
Torin fan - 178206-A-00
£ 1,345.00
Torin fan - 178206-A-00...
Torin fan - DDN913-824 -  076192-03
Torin fan - DDN913-824 - 076192-03
£ 2,349.00
Torin fan - DDN913-824 - 076192-03...
Displaying 49 to 54 (of 54 products)
1 x REU 1.5amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)2 x Speed Controller - REB1-N1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x Easy-fix termination kit - High Rise Ventilator - EFT1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x GRA-100 External Grill by S&P1 x Elta Louvre Shutter - 400mm1 x Elta Wall Cowl SWC25/311 x Elta Wall Cowl SWC35/401 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7101 x Jet Cowl - 315mm1 x CAB-150 ECOWATT Energy Efficient Acoustic Box Fan1 x D2E-146-AP47-751 x AL 315 EC 01 AXIALINE - High Performance Long Cased Axial Fan1 x AW Sileo EC Plate Axial Fan - Three Phase - 1000mm1 x AL 450 EC 03 AXIALINE - High Performance Long Cased Axial Fan1 x AW Sileo EC Plate Axial Fan - Three Phase - 800mm1 x Small Centrifugal Fans CBM/2-133/190 185w1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan1 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE1 x Helios TSW 7.5 Amp Transformer speed controller1 x TDP-D Pressure Sensor with Display1 x Helios TSW 3 Amp Transformer speed controller1 x RDS 11 Helios Transformer Controller With Motor Protection1 x Transformer speed controller - ATC1 - 1.5 Amps1 x Vent Axia ACM 100 inline mixed flow duct fan1 x 7 Day Programmable TIMECLOCK1 x DEF-140T Inlet Guard for the CBT-100N1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x Two Speed Switch - REGUL-21 x Speed Controller - REB31 x REE-1 Electronic Speed Controller1 x Rectangular Airbrick Adaptor1 x Speed Controller - REB101 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x MTP 10, 10K, Speed control1 x FFR 355 Filter Cassette1 x Transformer Speed Control - RTRE- 7.0Amp1 x Speed Controller - REB11 x PIR Sensor - PIR41 x Silent 100 Window Kit - windowS1 x CBM 9-9 550w 4P VR (Open Motor)1 x Transformer Speed Control - RTRE- 5.0Amp1 x UB47- Universal Insulated Terminal1 x Transformer Speed Control - RTRE- 1.5Amp1 x MTS10- extractor fan 3 step switch1 x DDMP 09/09 Mounting Flange1 x DDMP 12-12 3F 1810W M6A4 DG01 x DEF-CBM-RE-7 - Protection Guard1 x Elta Wall Cowl SWC56/631 x MEV Spider Wireless boost Switch - MEV-SWH-W1 x CBT-100N Centrifugal1 x Silentub - STUB 1001 x Elta Wall Cowl SWC45/501 x ACO8AC/EC AutoChangeover panel1 x Duct Termination with Mesh - 100mm
Reviews
Circular Inline Silencers - 0.6M long - SLU-600
Circular Inline Silencers - 0.6M long - SLU-600
£ 58.40

I have a loft mount extractor fan which was very noisy. I ...