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CPB Circular Plenum

    • Product Details


      CPB circular plenums are designed to work with circular diffusers particularly when the duct work is exposed, the circular plenums improve the aesthetics of the installation and can be supplied in natural material finish or powder coated typically in RAL9010 white or RAL 9005. The plenums can be top or side entry as required and can also incorporate spigot dampers and acoustic lining where required.

      Product Description

      • CPBCircular plenum
      • FDCCord-operated Flap damper (optional)
      • LINED6mm acoustic lining (optional) reaction to fire class C-s3-d0 to EN 13501-1: 2007
      • BLACKPlenum painted black to prevent through vision (optional)


      • Side entry spigot with optional airflow control damper
      • Size can be customised
      • Internal baffle to distribute airflow


      • CPBGalvanised sheet steel


      • HeightSE – Spigot diameter or height + 100mm as standard

        TE – as specified by customer (200mm minimum recommended)


      When ordering plenum chambers please specify length, width & height, spigot size and position (Top or Side Entry) and control options. Please note that the plenum height should in general be 100mm greater that the spigot diameter (Side Entry applications).

      Product Specification

      Related links

      Plenum boxes installation and maintenance

      Plenum Insulation Thermal & Acoustic Specification

      Plenum lining foam Polyester


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