• 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

1 x Silent 100 Window Kit - windowS2 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan2 x Helios TSW MCB Amp Transformer speed controller2 x Transformer 5 Speed Controller - ATC1-4TK1 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)3 x Speed Controller - REB1-N1 x PIR Sensor - PIR21 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x PIR Sensor - PIR41 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x Easy-fix termination kit - High Rise Ventilator - EFT2 x Speed Controller - REB11 x CBM 9-9 550w 4P VR (Open Motor)2 x QPTW 250C Acoustic Twin Fan with Controller1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x Elta Wall Cowl SWC56/631 x GRA-100 External Grill by S&P1 x Elta Louvre Shutter - 400mm2 x LFBR 315 G4 - Helios Inline Filter Box - 315mm1 x Elta Wall Cowl SWC25/311 x Elta Wall Cowl SWC35/401 x Elta Wall Cowl SWC45/501 x ACO8AC/EC AutoChangeover panel1 x Jet Cowl - 315mm1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7102 x Remote controller FLEX - for VEKO INT2 x Helios TSW 7.5 Amp Transformer speed controller2 x Transformer 5 Speed Controller - ATC1-10TK2 x Systemair Save Connect 2.0 Internet Module2 x Vent Axia ACM 125 inline mixed flow duct fan1 x Helios HQW-630/4 - IP552 x Transformer (silent) speed controller - RE 3.0 Amp1 x UB47- Universal Insulated Terminal1 x DDMP 12-12 3F 1810W M6A4 DG01 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)1 x AXC TP - 100mm Plastic Centrifugal Inline Fan1 x GENIOX 11 Internal Mounted Unit1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x CBT-100N Centrifugal2 x DEF-140T Inlet Guard for the CBT-100N1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan1 x REU 1.5amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x Helios TSW 1.5 Amp Transformer speed controller1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 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 Speed Controller - REB31 x TEM 075 - 5 Speed Transformer Speed Control1 x CBS-60 Outlet Flange for CSB/CBT-601 x Speed Controller - REB101 x MTP 10, 10K, Speed control1 x Transformer Speed Control - RTRE- 7.0Amp1 x Vent Axia Silent 100T (TIMER)1 x Speed Controller - REB81 x Transformer Speed Control - RTRE- 1.5Amp1 x CBA-60 Inlet Flange for CBT-601 x AIRVENT speed control - AIR4019611 x CBP-18/18-RC Belt Driven Centrifugal Fans1 x SPI-100 C Iris damper1 x MTS10- extractor fan 3 step switch1 x Silentub - STUB 1001 x CSB-60 Centrifugal fan1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x Helios ESA-1 Surface mounted Speed Control 1amp1 x HIMF - Mixed Flow Fan 100mm Inline Fan1 x TD160-NT Mixvent - 100mm - TD160 Timer1 x CBM Low Pressure Centrifugal Fan - CBM 12/12 6 Pole 736watt CVR1 x 100mm Round Connector with Damper1 x CBA-100 Inlet Flange for CBT-1002 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan2 x Temperature Fan Speed Controller - ATCP4-WMS1 x Transformer 5 Speed Controller - ATC1-2TK1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Vent Axia ACM 150 inline mixed flow duct fan1 x Push Timer Switch - ZA41 x Helios TSW 3 Amp Transformer speed controller1 x RDS 11 Helios Transformer Controller With Motor Protection1 x Single phase speed controller by auto-transformer - RMB 10.0 Amp2 x TG-K3/NTC10-01 - Duct temperature sensor1 x Remote Timer Control - 13511 x EFSC-3N- Single Phase Speed Control2 x Commercial Single or 3 phase Fan Reversing Switch - RS12 x Skyflow SSR Horizontal Roof Cowl SSR31/35B2 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)1 x KKS 100 silencer-section - For use with the MUB 100 size Fans.1 x MEV Spider Wireless boost Switch - MEV-SWH-W1 x FRQ5-10A Inverter Speed controller1 x Mini Diffuser - 100mm1 x DDMP 09/09 Mounting Flange1 x Speed Controller - REB2.5-N2 x Envirovent 4 Way Remote Control Switch - SWHBKRF-41 x MWS 5 – Transformer Controller With Motor Protection Unit1 x Vent Axia ACM 100 inline mixed flow duct fan1 x MWS 3 – Transformer Controller With Motor Protection1 x Isolator Switch - ISOSW1 x 7 Day Programmable TIMECLOCK1 x Two Speed Switch - REGUL-21 x MWS 1.5 – Transformer Controller With Motor Protection1 x Airvent ceiling fan controller
Reviews
Circular Inline Silencers - 0.6M long - SLU-600
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I have a loft mount extractor fan which was very noisy. I ...