• 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 Elta 10 Amp Electronic single phase speed controller.1 x Circular Ceiling Diffuser - TST 1601 x ELTA - Single Phase Transformer 12amps2 x Remote Timer Control - 13511 x ELTA - Single Phase Transformer 10amps1 x Run On Timer - 5s - 4hrs - RT5A1 x Helios ZNE Electronic Fan Overrun Timer2 x Push Timer Switch - ZA41 x Time Delay Unit - DT20B1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 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- 3551 x Egg Crate Grille with Dust panel filter 1 inch- 595x5951 x FRQ-10A V2 Inverter Speed controller1 x FU 22 25 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 4.0KW1 x ELTA - Three Phase Transformer 3amps1 x FU 075 04 Frequency Inverter (IP20)1 x PCA Diffuser - PCA-3151 x Circular Ceiling Diffuser - TST 1001 x Round ceiling diffuser 400mm1 x ELTA - Single Phase Transformer 2amps2 x Electronic extractor fan speed controller - FSC 1.51 x JSR 200 Painted RAL50182 x EC6H - Reversible Group Fan Electronic Controller1 x Balance S Diffuser - NO RING - 100mm1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x Round ceiling diffuser 200mm1 x Round ceiling diffuser 350mm1 x Airvent ceiling fan controller1 x Round ceiling diffuser 250mm1 x Three Phase Transformer controllers - RMT 1.5 Amp1 x PCA Diffuser - PCA-2502 x Envirovent G4 Filter - SL-G4/F71 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x Speed Controller - REB51 x MTS10- extractor fan 3 step switch1 x Elta Wall Cowl SWC56/631 x Elta Variable Speed Drive IP66 - 2.2KW1 x PIR Sensor - PIR41 x Envirovent 4 Way Remote Control Switch - SWHBKRF-41 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan3 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan2 x Remote controller FLEX - for VEKO INT1 x Helios TSW 7.5 Amp Transformer speed controller2 x Transformer 5 Speed Controller - ATC1-10TK2 x Helios TSW 3 Amp Transformer speed controller2 x Transformer 5 Speed Controller - ATC1-4TK1 x Transformer 5 Speed Controller - ATC1-12TK2 x Transformer 5 Speed Controller - ATC1-8TK1 x Helios TSW MCB Amp Transformer speed controller1 x Vent Axia ACM 150 inline mixed flow duct fan1 x Vent Axia ACM 100 inline mixed flow duct fan2 x Vent Axia ACM 125 inline mixed flow duct fan2 x CS2 Current Switch1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x MWS 3 – Transformer Controller With Motor Protection3 x COM-32 x Elta 6 Amp Electronic single phase speed controller with TK2 x Single phase speed controller by auto-transformer - RMB 8.0 Amp3 x WS - Reversing Switch from Helios Fans2 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x Elta 3 Amp Electronic single phase speed controller with TK2 x Vent Axia T-Series Controller1 x Transformer Speed Control - RTRE- 12.0Amp1 x REE-1 Electronic Speed Controller2 x Helios HQW-200/2 - IP551 x Transformer (silent) speed controller - RE 3.0 Amp1 x Helios HQW-630/4 - IP55
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 ...