Air Grilles for HVAC Systems

Square Swirl Diffusers – Model PSB

The Polyaire PSB Swirl Diffuser has fixed spiral blades that create rotational as well as axial, tangential and radial air movement. This means that it produces a strong horizontal swirl, obtaining high inductivity, to allow the introduced flow to rapidly mix with the ambient air to reduce temperature and also perceived drafts or hot/cold spots.

Velocity is reduced while still maintaining volume and reduced noise and this product is ideally suited to handling large volumes. The PSB maintains high quality air diffusion throughout the space with minimal temperature variation. The Swirl effects ensure good mixing of supply and ambient air.

The PSB is also suitable for return air application due to low pressure drop across the grille. The standard PSB is made of cold rolled galvanized plate steel powder coated white (RAL9010) Other finishes are available to suit the interior and architectural design requirements. The face plate is 595mm square and suitable for surface mounting in the ceiling or alternatively as a lay-in for T-Bar ceiling installations.

Model PSB

Item #Face Size/Neck Size (mm)Q (mm/inch)L (mm/inch)
247094PSB Q 595/254595/23254/10
247095PSB Q 595/336595/23336/13
247096PSB Q 595/440595/23440/17
247097PSB Q 595/530595/23530/21

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