• Model:SQS250-1ECL

Quietflow SQS250-1ECL - Centrifugal Box Fan

£ 1,259.39 (excl. VAT)

£ 1,511.27 (inc. VAT)


Quietflow SQS250-1ECL - Centrifugal Box Fan

• Standard size 250 mm
• Air volume flow rates up to 0.347 m3/s
• Static pressures up to 841 Pa
• Suitable for operating temperatures up to +60℃
• Robust galvanised sheet steel casing
Acoustically lined single in-line centrifugal fans, suitable for internal duct mounting. The Quietflow incorporates advanced backward curved impellers, with three ndimensional profiled blades.

Low Noise
Each unit is acoustically lined internally with Class O rated (BS 476 Parts 6 and 7) fire resistant acoustic foam lining minimising breakout noise levels.

Easy Installation
New multi-mount brackets allow easy mounting in a range of orientations.

Easy Commissioning
Integrated commissioning control allowing single speed selection and also limiting maximum speed if used with an external potentiometer.

Efficient Performance
High efficiency low tonal noise backward curved centrifugal impellers are directly driven by an EC external rotor motor, provide low specific fan powers and stepless speed control without tonal noise generation.

Weather Resistance
Units can be weatherproofed in the factory to allow external installation.

PDF Files


SQS250-1ECL Specification Sheets

2 x MTP 10, 10K, Speed control1 x Elta Variable Speed Drive IP66 - 2.2KW3 x Silent 100 Window Kit - windowS2 x Transformer Speed Control - RTRE- 7.0Amp1 x Remote Timer Control - 13511 x REB-CVF 0-10v Controller4 x Speed Controller - REB1-N1 x TG-R room temperature sensor2 x Electronic extractor fan speed controller - FSC 1.51 x ELM 18 EX Flexible Cuff for ERM 184 x Vent Axia Silent 100T (TIMER)5 x PIR Sensor - PIR22 x Helios HQW-315/4 - IP551 x Helios HQW-250/4 - IP552 x MEV Spider Wireless boost Switch - MEV-SWH-W1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3552 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)3 x UB47- Universal Insulated Terminal3 x Speed Controller - REB82 x CBM 9-9 550w 4P VR (Open Motor)4 x PIR Sensor - PIR43 x QPTW 250C Acoustic Twin Fan with Controller2 x TD Mixvent 800/200 EEXEIIT31 x DDMP 10-08 3F 2210W M6A4 DG01 x Elta Wall Cowl SWC56/631 x Elta 10 Amp Electronic single phase speed controller.1 x RDH FLEX-SQUARE - ADH/RDH 04502 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x GRA-100 External Grill by S&P1 x Elta Louvre Shutter - 400mm1 x Quietflow SQS100-1ECL - Centrifugal Box Fan2 x MTS10- extractor fan 3 step switch1 x RDS 11 Helios Transformer Controller With Motor Protection1 x Transformer speed controller - ATC1 - 1.5 Amps2 x Transformer (silent) speed controller - RE 5.0 Amp2 x LFBR 315 G4 - Helios Inline Filter Box - 315mm2 x TG-K Duct temperature sensor1 x Transformer 5 Speed Controller - ATC1-8TK2 x Transformer 5 Speed Controller - ATC1-4TK1 x Elta 6 Amp Electronic single phase speed controller.1 x Transformer 5 Speed Controller - ATC1-2TK2 x DDMP 12-12 3F 1810W M6A4 DG01 x Compact SCD450/4-1AC2 x Mini Diffuser - 100mm2 x Elta Variable Speed Drive IP66 - 1.5KW3 x Speed Controller - REB11 x Duct Termination with Mesh - 355mm2 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan1 x EBM-Papst D4E225-BC01-17 Double inlet1 x AXC TP - 100mm Plastic Centrifugal Inline Fan1 x Speed controller with Reverse - REB-1R3 x Transformer Speed Control - RTRE- 1.5Amp1 x Elta Wall Cowl SWC25/311 x Elta 3 Amp Electronic single phase speed controller with TK2 x FRQ5-10A Inverter Speed controller2 x Duct Termination with Mesh - 450mm2 x RD35S-4DW.6W.3L - 122297 (Three Phase)1 x CBS-60 Outlet Flange for CSB/CBT-601 x CK-60F Kit2 x Helios TSW 1.5 Amp Transformer speed controller1 x Elta Wall Cowl SWC35/401 x Speed Controller - REB162 x CMT-2 120/50 - 0,09Kw - LG270 Single inlet centrifugal fan direct driven1 x Egg Crate Grille with G2 Dust panel filter 1 inch- 300x3001 x Elta Wall Cowl SWC45/501 x CBT-100N Centrifugal1 x Vertical Cowl and Fan (Single Phase) - RAV400-4-12 x Elta - Room Sensor - Temp/Humid/C021 x MWS 3 – Transformer Controller With Motor Protection2 x CBA-60 Inlet Flange for CBT-601 x TecFire Intumescent Damper - Rectangular 400x400mm1 x REU 3amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x Three Phase 3 step - 10amp Transformer controller for use with the HV Wall Mounted fans.1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR2 x DDMP 10-10 1F 1000W M6A2 DA51 x Jet Cowl - 315mm1 x VTR 300 STD Filter Kit1 x CBM Low Pressure Centrifugal Fan - CBM 9/7 4 Pole 373watt CVR1 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE2 x AXC TP - 150mm Plastic Centrifugal Inline Fan1 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan1 x Helios TSW 3 Amp Transformer speed controller1 x ERR 20/1 Centrifugal inline fan1 x REE-2 Electronic Speed Controller1 x Duct Termination with Mesh - 400mm1 x ENV 100 12v transformer SELV2 x CBM Low Pressure Centrifugal Fan - CBM 12/12 6 Pole 736watt CVR1 x Helios TSW 7.5 Amp Transformer speed controller1 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)1 x Temperature Fan Speed Controller - ATCP4-WMS1 x Remote controller FLEX - for VEKO INT2 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x Skyflow SSR Horizontal Roof Cowl SSR31/35B1 x Commercial Single or 3 phase Fan Reversing Switch - RS12 x CBM 12-12 1100w 6P Three Phase1 x Helios RR-250-C Centrifugal inline fan1 x 100mm Round Connector with Damper1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7102 x Duct Termination with Mesh - 250mm1 x GXC6EC - High Performance Extract Fan1 x CBM Low Pressure Centrifugal Fan - CBM 10/8 4 Pole 373watt CVR2 x RDS 1 Helios Transformer Controller With Motor Protection1 x Comefri - TLZ 450 R - High Performance Scroll Fan1 x Elta SCP400/4-1AC - IP551 x Skyflow SSR Horizontal Roof Cowl SSR80B1 x RDS 7 Helios Transformer Controller With Motor Protection
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