• 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 COM-31 x Push Timer Switch - ZA41 x Helios ZNE Electronic Fan Overrun Timer2 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x CS2 Current Switch2 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x Time Delay Unit - DT20B1 x Multi Input Run On Timer - 0 - 20min - CFCU3 x MWS 3 – Transformer Controller With Motor Protection1 x 7 Day Programmable TIMECLOCK1 x TTC-2000 Three phase electric heater controller1 x Isolator Switch - ISOSW1 x ACOAS/ AC/EC Auto Changeover 8Amp2 x Airvent ceiling fan controller1 x Elta Variable Speed Drive IP66 - 0.75KW1 x CONTROL ECOWATT - Basic1 x Systemair Save Connect 2.0 Internet Module3 x MWS 1.5 – Transformer Controller With Motor Protection3 x WS - Reversing Switch from Helios Fans1 x Elta 6 Amp Electronic single phase speed controller with TK2 x TG-K Duct temperature sensor1 x EM30-24 Electro-Mechanical Control Panel1 x EC-Vent control board1 x Elta ACO Panel 149-ACO14E1 x Transformer (silent) speed controller - RE 3.0 Amp2 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x Helios HQW-200/2 - IP551 x Transformer 5 Speed Controller - ATC1-12TK1 x Silent 100 Window Kit - windowS1 x PIR Sensor - PIR21 x Isolator Switch - EFF-ISO1 x Vent Axia Silent 100T (TIMER)1 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x Transformer (silent) speed controller - RE 1.5 Amp1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x Transformer Speed Control - RTRE- 7.0Amp1 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x Helios HQW-315/4 - IP551 x Elta 6 Amp Electronic single phase speed controller.1 x Helios HQW-630/4 - IP551 x EC6H - Reversible Group Fan Electronic Controller1 x Speed Controller - REB11 x RDH FLEX-SQUARE - ADH/RDH 04501 x Speed Controller - REB1-N1 x Easy-fix termination kit - High Rise Ventilator - EFT1 x Helios ESA-1 Surface mounted Speed Control 1amp1 x Helios HQW-200/4 - IP551 x SG-200 Fan Guard for the HQW 2001 x Helios HQW-250/4 - IP55
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 ...