• 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 Helios TSW 1.5 Amp Transformer speed controller1 x Transformer Speed Control - RTRE- 7.0Amp2 x Speed Controller - REB101 x Transformer Speed Control - RTRE- 1.5Amp4 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x Push Timer Switch - ZA42 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)2 x MWS 3 – Transformer Controller With Motor Protection2 x Speed Controller - REB13 x Systemair Save Connect 2.0 Internet Module2 x CS2 Current Switch3 x COM-34 x MWS 1.5 – Transformer Controller With Motor Protection3 x Elta Variable Speed Drive IP66 - 0.75KW1 x Remote controller FLEX - for VEKO INT3 x Isolator Switch - ISOSW1 x Time Delay Unit - DT20B1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x DDMP 12-12 3F 1810W M6A4 DG01 x Speed Controller - REB81 x 7 Day Programmable TIMECLOCK1 x TTC-2000 Three phase electric heater controller1 x ACO8AC/EC AutoChangeover panel1 x ACOAS/ AC/EC Auto Changeover 8Amp2 x Single phase speed controller by auto-transformer - RMB 3.5 Amp2 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x CBM Low Pressure Centrifugal Fan - CBM 12/12 6 Pole 736watt CVR1 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x MTS10- extractor fan 3 step switch2 x TG-K3/NTC10-01 - Duct temperature sensor2 x TG-K Duct temperature sensor2 x MTP 10, 10K, Speed control1 x Elta ACO Panel 149-ACO14E2 x Transformer (silent) speed controller - RE 1.5 Amp1 x EM30-24 Electro-Mechanical Control Panel1 x EC-Vent control board1 x Vent Axia ACM 100 inline mixed flow duct fan1 x Elta 6 Amp Electronic single phase speed controller with TK1 x JETLINE-100 ECOWATT - In Line Centrifugal Duct Fan1 x ACO 149-ACO1/EDV1 x Transformer speed controller - ATC1 - 1.5 Amps1 x CBT-130N Centrifugal2 x Helios HQW-200/2 - IP551 x Potentiometer EGH 01 - for DDMP Fans2 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted1 x EC6H - Reversible Group Fan Electronic Controller2 x BEAS-control module2 x Speed Controller - REB1-N1 x Elta - Room Sensor - Temp/Humid/C021 x FlameProof Plate Axial Fan - Single Phase - 9 inches - Eexd IIC T4 -4pole1 x Vent Axia Silent 100T (TIMER)1 x EC-Vent Room Unit1 x Envirovent G4 Filter - SL-G4/F71 x Elta Variable Speed Drive IP66 - 2.2KW2 x Contactor Interface Station - CI91 x Mounting Feet (Pair) for SLC-450-060B-04501 x EM30-24 Control Panel Commissioning Service1 x Access Door for Circular Duct - 400 x 300 - SIZE 451 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 Transformer 5 Speed Controller - ATC1-12TK1 x TG-R room temperature sensor1 x GXC6EC - High Performance Extract Fan1 x Electronic extractor fan speed controller - FSC 1.51 x TG-K Duct temperature sensor1 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan1 x AIRVENT speed control - AIR4019611 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE1 x AXC TP - 150mm Plastic Centrifugal Inline Fan1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan1 x CBT-100N Centrifugal1 x Speed controller with Reverse - REB-1R1 x Elta ACO Panel 149-ACO18B1 x Silent 100 Window Kit - windowS1 x Transformer 5 Speed Controller - ATC1-4TK1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection
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 ...