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 25 to 48 (of 53 products)
Nicotra RDH E0-0400 (L)
Nicotra RDH E0-0400 (L)
£ 1,672.92
Nicotra RDH E0-0400 (L)...
Nicotra RDH E2-0280 (R)
Nicotra RDH E2-0280 (R)
£ 945.00
Nicotra RDH E2-0280 (R)...
Nicotra RDH E2-0315 (R)
Nicotra RDH E2-0315 (R)
£ 1,154.52
Nicotra RDH E2-0315 (R)...
Nicotra RDH E2-0355 (R)
Nicotra RDH E2-0355 (R)
£ 1,544.39
Nicotra RDH E2-0355 (R)...
Nicotra RDH E2-0400 (R)
Nicotra RDH E2-0400 (R)
£ 1,617.84
Nicotra RDH E2-0400 (R)...
Nicotra RDH E2-0500 (R)
Nicotra RDH E2-0500 (R)
£ 2,262.60
Nicotra RDH E2-0500 (R) This fan is on a 8 week lead time,...
Nicotra RDH E4-0225 (K)
Nicotra RDH E4-0225 (K)
£ 1,024.92
Nicotra RDH E4-0225 (K)...
Nicotra RDH E4-0250 (K)
Nicotra RDH E4-0250 (K)
£ 1,214.99
Nicotra RDH E4-0250 (K)...
Nicotra RDH E4-0315 (K)
Nicotra RDH E4-0315 (K)
£ 1,216.08
Nicotra RDH E4-0315 (K)...
Nicotra RDH E4-0355 (K)
Nicotra RDH E4-0355 (K)
£ 1,558.44
Nicotra RDH E4-0355 (K)...
Nicotra RDH E4-0355 (K) With Flange 0355 ADHE/RDHE
Nicotra RDH E4-0355 (K) With Flange 0355 ADHE/RDHE
£ 1,936.22
Nicotra RDH E4-0355 (K) With Flange 0355 ADHE/RDHE...
Nicotra RDH E4-0400 (K)
Nicotra RDH E4-0400 (K)
£ 2,084.39
Nicotra RDH E4-0400 (K) *** THIS PRODUCT CAN NOT BE RETURNED AS IT IS MADE TO ORDER ***...
Nicotra RDH E4-0400 With Framework Fitted
Nicotra RDH E4-0400 With Framework Fitted
£ 1,988.71
Nicotra RDH E4-0400 With Framework Fitted...
Nicotra RDH E4-0450 (K)
Nicotra RDH E4-0450 (K)
£ 2,247.48
Nicotra RDH E4-0450 (K) *** THIS PRODUCT CAN NOT BE RETURNED AS IT IS MADE TO ORDER ***...
Nicotra RDH E4-0450 (L)
Nicotra RDH E4-0450 (L)
£ 1,865.07
Nicotra RDH E4-0450 (L)...
Nicotra RDH E4-0500 (K)
Nicotra RDH E4-0500 (K)
£ 2,360.72
Nicotra RDH E4-0500 (K) This fan is on a 8 week lead time,...
Nicotra RDH E4-0560 (K)
Nicotra RDH E4-0560 (K)
£ 3,450.60
Nicotra RDH E4-0560 (K)...
Nicotra RDH E6-0450 (K1)
Nicotra RDH E6-0450 (K1)
£ 2,646.00
Nicotra RDH E6-0450 (K1)...
Nicotra RER  11-0225
Nicotra RER 11-0225
£ 945.00
Nicotra RER 11-0225. - Lock formed casing, galvanised sheet steel - discharge flange - multi position feet - Deep groove ball bearings, maintenance free...
RD28S-4DW.4ER.2L
RD28S-4DW.4ER.2L
£ 4,074.99
RD28S-4DW.4ER.2L Double inlet centrifugal fan with spiral housing. Type: RD28S-4DW.4ER.2L...
RD28S-4DW.4R.2L
RD28S-4DW.4R.2L
£ 769.55
RD28S-4DW.4R.2L Double inlet centrifugal fan with spiral housing. Type: RD28S-4DW.4R.2L...
RD28S-4DW.4R.AL - (209880)
RD28S-4DW.4R.AL - (209880)
£ 1,895.00
RD28S-4DW.4R.AL - (209880) Double inlet centrifugal fan with spiral housing. Type: RD28S-4DW.4R.AL - (209880)...
RD28S-4EW.4R.2L
RD28S-4EW.4R.2L
£ 976.24
RD28S-4EW.4R.2L Double inlet centrifugal fan with spiral housing. Type: RD28S-4EW.4R.2L...
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 ...
Displaying 25 to 48 (of 53 products)
1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x FRQ5-4A V2 Inverter Speed Controller1 x FRQ-10A V2 Inverter Speed controller1 x Elta Variable Speed Drive IP66 - 2.2KW1 x Elta Variable Speed Drive IP66 - 7.5KW1 x Frequency converter RUCK - FU 075 201 x Elta Variable Speed Drive IP66 - 0.75KW1 x Elta 10 Amp Electronic single phase speed controller.1 x FU 15 40 Frequency Inverter1 x FU 22 25 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x ELTA - Three Phase Transformer 3amps1 x ELTA - Three Phase Transformer 10amps1 x Elta Variable Speed Drive IP66 - 5.5KW1 x FU 15 16 Frequency Inverter1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x FU 075 04 Frequency Inverter (IP20)1 x ELTA - Single Phase Transformer 2amps1 x Electronic extractor fan speed controller - FSC 1.51 x 5-Speed Controller for use with Elta SAX Classic Fans1 x Elta 6 Amp Electronic single phase speed controller with TK1 x Elta 3 Amp Electronic single phase speed controller.1 x Elta 3 Amp Electronic single phase speed controller with TK1 x Elta 2 Amp Electronic single phase speed controller.1 x ELTA - Single Phase Transformer 16amps1 x ELTA - Single Phase Transformer 8amps1 x Airvent ceiling fan controller1 x AIRVENT speed control - AIR4019611 x ELTA - Single Phase Transformer 4amps1 x Vent Axia ACM 150 inline mixed flow duct fan1 x ELTA - Single Phase Transformer 12amps1 x Elta 6 Amp Electronic single phase speed controller.1 x COM-31 x Run On Timer - 5s - 4hrs - RT5A1 x EFSC-6N- Single Phase Speed Control1 x Vent Axia ACM 200 inline mixed flow duct fan1 x ELTA - Single Phase Transformer 10amps1 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x Helios ZNE Electronic Fan Overrun Timer1 x Time Delay Unit - DT20B1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Push Timer Switch - ZA41 x 7 Day Programmable TIMECLOCK1 x TTC-2000 Three phase electric heater controller1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x ACO8AC/EC AutoChangeover panel1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x EC-Vent control board1 x MTS10- extractor fan 3 step switch1 x Elta ACO Panel 149-ACO14E1 x Easy-fix termination kit - High Rise Ventilator - EFT1 x CONTROL ECOWATT - Basic1 x ACO 149-ACO1/EDV1 x REB-CVF 0-10v Controller1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x EM30-24 Electro-Mechanical Control Panel1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x EC-Vent Room Unit1 x Elta Wall Cowl SWC56/631 x Systemair Save Connect 2.0 Internet Module1 x EM30-24 Control Panel Commissioning Service1 x Elta Wall Cowl SWC35/401 x Elta Wall Cowl SWC45/501 x Elta Wall Cowl SWC25/311 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7101 x Elta Louvre Shutter - 400mm1 x Jet Cowl - 315mm
Reviews
DAOSL Back Draft Damper
DAOSL Back Draft Damper
£ 11.49

Look good, works well, except the shaft of the lanellae cuts...