• Model:SQS250-1ECL

Quietflow SQS250-1ECL - Centrifugal Box Fan

£ 1,177.00 (excl. VAT)

£ 1,412.40 (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 FlameProof Plate Axial Fan - Single Phase - 7.5 inches - Eexd IIC T4 -4pole1 x Sentinel D-BOX 150S/CP1 x AL 315 EC 01 AXIALINE - High Performance Long Cased Axial Fan1 x Flanged Spigot - 300mm2 x Ducting Reducers Short - 355mm-315mm1 x 110 x 54mm Low Profile Plastic Ducting - 2 Meter1 x KBTA-100 - Inlet Silencer for CBT1 x Traditional T-Series Wall Fan - TX12WL1 x Direct Saturday Delivery Surcharge1 x Duct Suspension Rings - 250mm1 x Gorilla HVLSX301 x KVK SLIM 160 EC - Centrifugal Circular Duct Fan1 x LC040K2-A5/28 Long-Cased Axial - 400mm1 x Flanged Spigot - 315mm1 x Belt Drive Cased Axial Fan - 800mm - L version1 x Soler & Palau - Contra Rotating TCBTx2-630 - IP651 x CBB-80N Centrifugal1 x Gorilla HVLSX601 x Female Ducting Connector - 250mm1 x Rotorex HXTR Sickle Bladed Plate Axial Fan - 6 Pole - Three Phase - 710mm1 x Quietflow SQS250-1ECL - Centrifugal Box Fan1 x Helios TSW 7.5 Amp Transformer speed controller1 x BDS 800 RA b/d shutter1 x Spiral Ducting 1 meter - 160mm1 x MV-Silent 350 Bathroom Extractor Fan Kit - Standard - No Timer2 x Acoustic MiniBox Fan - MINI-BOX 1501 x Soler & Palau - HCBT/6-710/H - IP651 x Singleflow SSDL150-1EC1 x Ducting 90 Degree Bend - 200mm1 x Gorilla HVLSX401 x 125mm Wall Duct - 350mm1 x Speed Controller - REB11 x 125mm - 100mm Round Reducer1 x EM 400 E4M 01 - Mixed Flow Duct Fan - 400mm1 x Additional shipping charge for offshore islands1 x UB47- Universal Insulated Terminal1 x External weather louvre 500w x 500h - WL501 x Ducting 90 Degree Bend - 300mm1 x Same Day Shipping Surcharge2 x HV-RC 230mm (With Wall Kit)1 x 204x60mm Elbow Bend with 125mm Fixed Spigot1 x Male Ducting Connector - 630mm1 x MPC 450 E4 20 - High Temp Acoustic Box Fan1 x SG AW 910 Guard grille (GFC)1 x Hideaway SH150-1ECL1 x Helios SVR EC 160 B – SlimVent Centrifugal Fan Box1 x Jet Fan IV 100-4 IE3 Induction Fan1 x 150mm Round Connector with Damper1 x Systemair AR 200E2 Sileo - IP441 x 220x90mm to 204x60mm Rectangular Adapter1 x Acopel F400-630/1601 x Acopel F400-315/1601 x Revolution SLCX ATEX Long Cased Axial Flow Fan SLCX560/4-3 Three Phase1 x Classic SAX23/9AR Window/Wall Mounted1 x Carriage1 x Spiral Ducting 3 Meters - 80mm1 x CBT-100N Centrifugal ATEX II 2G Exe II T31 x JETLINE-250 - In Line Centrifugal Duct Fan1 x Anti Vibration Mounts - Large - Pack of 4 - AVM11 x Ducting Reducers Short - 315mm-250mm1 x Elta Unpodded Silencer 1D-250mm1 x Ancillary Pack for SLC-5001 x Jetflow Silent SJMF-S 250-1EC1 x Etaline 355mm - E2-011 x Classic SAX23/9ARB Wall Mounted1 x DTV200 - Differential Pressure Switch1 x Floor Standing Cooler Fan- SRC-4501 x MV-Silent 250 Bathroom Extractor Fan Kit - Timer1 x Soler & Palau - HCBT/4-1000/H-X - IP551 x Spiral Ducting Additional Courier Surcharge1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x Acopel F400-500/1601 x Ziehl-Abegg - GR40I-ZID.GG.CR1 x Pallet Delivery Surcharge1 x WX-12 - Wall Fan1 x CRBB/3-250/084M EC 2H01 x DA9/9-NT1 x Ducting T Piece Equal - 560mm1 x JAA-560 Acoustic Upstand1 x Duct Mounted Filter Box With G2 Paper AND Metal Washable Filter - 150mm1 x 1mtr Round Ducting - 150mm1 x VENT LK ECOWATT Centrifugal In-Line Duct Fan - 150mm1 x 150mm Round 90 Degree Bend1 x 125mm Round 90 Degree Bend1 x Clearflow CFHT Kitchen/High Temp Roof Fan - CFHT560/4-3AC1 x KVK SLIM 500 EC - Centrifugal Circular Duct Fan1 x JBS-1250 Flat Roof Upstand for HCTT/4-1000/B1 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x HRT/6-710/30-BQ E21 x Duct Fast Clamps - 400mm1 x Male Ducting Connector - 150mm1 x Duct Quick Suspension Rings with Clasp - 315mm1 x Metallic Kitchen Extractor - CK35N1 x 125mm Insulated Round T-Piece1 x DHS 500E4 roof fan1 x Transformer Speed Control - RTRE- 7.0Amp1 x FedEx TEN AM delivery Surcharge1 x Filter Box With F7 Grade Bag Filter - 200mm1 x Singleflow SSDL500-1EC1 x Duct Termination with Mesh - 560mm1 x D2E146-HT67-021 x Metal Inline Fan - VENT-160NK1 x AW Sileo EC Plate Axial Fan - Three Phase - 710mm1 x Elta SCP710-1EC1 x GENIOX 11 Roof Mounted External Unit1 x CADB/T-HE PRO-REG Series1 x Compact SCD450/4-3AC1 x Spiral Ducting 3 Meters - 180mm1 x Spiral Ducting 3 Meters - 450mm1 x JETLINE-100 ECOWATT - In Line Centrifugal Duct Fan1 x Revolution SLCX ATEX Long Cased Axial Flow Fan SLCX500/4-3 Three Phase1 x DDMP 09-09 1F 1000W M6A1 DA51 x Vent Axia KAF Kitchen Extract Fan - 630mm - 2 Pole - Single Phase1 x Elta Turboflow-TF - 450mm - Single phase1 x Singleflow SSDL500-3EC1 x Ancillary Pack for SLC-4001 x Filter Box With F7 Grade Bag Filter - 150mm1 x Elta Turboflow-TF - 630mm - Single phase1 x Vent Axia KAF Kitchen Extract Fan - 630mm - 2 Pole - Three Phase1 x filter pack (set of 2) pt no. 4438891 x Vent Axia SABRE Plate Mounted Sickle Fans - VSP315141 x CTVB/4-315 Kitchen/High Temp Roof Fan2 x Time Delay Unit - DT20B1 x RD35S-4DW.6W.3L - 122297 (Three Phase)1 x Inverter VFKB 451 x Soler & Palau - HCBT/4-800/H-B FLOW ( Supply Air Fan) - IP551 x Manrose Humidistat - 13611 x Vent Axia T-Series Wall Model TX9WL1 x AEL - Outlet Flexible Connection for TLZ450 R1 x 110 x 54mm Short Rectangular to Round Adaptor male1 x Rosenberg DKHR 355 2SB.100.6HF.IE1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x Soler & Palau TCBT/4-400/H - IP441 x Spigot plate - 355mm1 x Spiral end cap - 355mm1 x MPS 225 D2 F4 301 x 204x60mm 90 Degree Horizontal Bend1 x VA 12/2 T - High Temp Axial Fan,1 x Etaline 280mm1 x 2mtr Round Ducting - 150mm
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