• 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 Helios GigaBox 400mm GBD 400/4/4 centrifugal1 x Ancillary Pack for SLC-5601 x Helios GigaBox 400mm GBW 400/4 centrifugal1 x Duct Suspension Rings - 250mm1 x Female Ducting Connector - 150mm1 x Ancillary Pack for SB-Biflow 250 model1 x Ancillary Pack for SLC-6301 x Access Door for Circular Duct - 300 x 200 - SIZE 501 x 220x90mm Flat Channel Connector1 x Access Door for Circular Duct - 250 x 150 - SIZE 151 x Access Door 200mm x 200mm1 x Blast Gate (Manual) 125mm1 x EM 400 E4M 01 - Mixed Flow Duct Fan - 400mm1 x Ducting 15 Degree Bend - 150mm1 x Access Door for Circular Duct - 400 x 300 - SIZE 631 x Etaline 400mm D2-01 3-phase1 x Elta Wall Cowl SWC35/401 x Spiral Ducting 3 Meters - 150mm1 x Spiral Ducting 1 meter - 150mm1 x Access Door for Circular Duct - 250 x 150 - SIZE 311 x Elta Qube SQU Centrifugal Box Fan - SQU2/4-3 - Three Phase1 x Ancillary Pack for SLC-900 for SLC900/4B-3AC1 x Access Door for Circular Duct - 300 x 200 - SIZE 401 x Ancillary Pack for SB-CYL 500 model1 x Spigot plate - 250mm1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x Ancillary Pack for SB-CYL 400 model1 x 220x90mm 90 Degree Horizontal Bend1 x Duct Fast Clamps - 250mm1 x Ducting 45 Degree Bend - 250mm1 x Quietflow SQS500-1ECL - Centrifugal Box Fan1 x Ducting Y Piece - 100mm1 x Spiral Ducting 3 Meters - 250mm1 x DA 15/15 Feet1 x Clearflow CFHT Kitchen/High Temp Roof Fan - CFHT350/4-3AC1 x Elta 3 Amp Electronic single phase speed controller.1 x Elta Variable Speed Drive IP66 - 1.5KW1 x 110 x 54mm Rectangular Wall Plate1 x TCBT/4-400/H EXEIIT3 ATEX1 x GB-KW 355 Drain pan for Giga Box Fans - 355mm1 x Elta SCP560-1EC - IP551 x KV DUO 315 EC1 x 110 x 54mm Short Rectangular to Round Adaptor Female1 x MELL-USD 6000 Rectangular to Circular Adaptor 450 Dia1 x Soler & Palau - HCBT/4-560/H - IP651 x Elta Quietflow Twin SQT315-1ECL1 x CRHT/4-315 N Roof mounted Fan - Horizontal discharge1 x Elta Quietflow Twin SQT150-1ECL1 x Mellizo XL EcoWatt 3000 - Twin Fan1 x CRHB/6- 315mm Roof mounted Fan - Horizontal discharge1 x 204x60mm Double Airbrick Adapter1 x Push Timer Switch - ZA41 x Helios SB-250-C SilentBox Acoustic Inline Fan1 x Female Ducting Connector - 355mm1 x KV DUO 500 EC (3Ph-400v) with changeover1 x Clearflow CFHT Kitchen/High Temp Roof Fan - CFHT500/4-3AC1 x Compact SCD500/4-1AC1 x AL 315 Mounting Feet (Pair)1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x KV DUO 400 EC1 x 204x60mm Flat Channel Connector1 x Ducting Reducers Short - 355mm-315mm1 x Eco-Loft Positive Input Ventilation System - PIV Loft Mounted -EVL-HAS
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