Qube SQU

Centrifugal Box Fan

  • Box sizes of 500, 670, 820 and 1020mm
  • Suitable for 50°C (40°C 3Ph EC) Ambient Airstream
  • Interchangeable double skinned panels
  • Painted Aluminium Corners
  • Straight through airflow or 90° Outlet
  • Available in AC & EC
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Compatible Accessories


A multi-discharge insulated double skinned fan unit incorporating a high performance backward curved impeller. Available with energy efficient IE6 EC motor or AC motor to (EU) 2019/1781.

View the High Temperature Qube here.

Features and Benefits

Intelligent Design

Designed to maximise performance and reduce the use of energy having moveable panels allowing the outlet position to be altered on site to suit installation

Low Noise

Unit is constructed from double insulated panels filled with 25mm fibreglass acoustic insulation reducing radiated noise.

Robust Construction

Corrosion resistant aluminium frame with painted aluminium corners for strength and durability


Suitable for speed control and integration into a building management system dependant on model.


Each SQU has a 24-month warranty.



The casing shall be constructed from self-supporting corrosion-resistant extruded aluminium section assembled with Aluminium corners and 25mm thick double skinned removable panels, manufactured from pre-galvanised steel, in-filled with a non-flammable mineral wool.


The IEC frame Motor shall be either AC Three phase multi-voltage IP55 TEFC Foot / Flange mounted, wound for either (Delta) 230V/3Ph/50Hz or (Star) at 400V/3Ph/50Hz connection, suitable for speed control when used with a Variable Frequency Drive or EC single or three phase permanent magnet IE6 totally enclosed to IP55 with centralised control circuit for speed adjustment and Electronic protection against overload, over temperature and locked-rotor suitable for 50 and 60Hz supply.


Impeller shall be a high efficiency backward curved EN-AW 5754 aluminium with a non-overloading power characteristic, dynamically balanced to G6.3 according to ISO1940 part 1.


Units shall be suitable for use with Variable frequency drive or connection to a remote DC voltage: 2 to 10 VDC, DC current: 4 to 20 mA DC ¬ PWM: 10 to 95% ¬or potentiometer for speed control, dependent on model.


The unit shall be designed and manufactured with procedures as defined in BS EN ISO 9001. Airside performance shall be tested to ISO 5801 and BS 848 Part 2 for sound performance.

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