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SDP Plenum Box SDCH Swirl Diffusers

    • Product Details


      The proprietary plenum boxes for our SDCH swirl diffusers are designed to guarantee a good mixing of the air prior to diffusion through the terminals. Available with Side Entry connections matching the diffuser neck (nominal size), these can be fitted with Spigot flap dampers FD, cord- or quadrant-operated, as well as 6mm acoustic lining (optional) reaction to fire class C-s3-d0 to EN 13501-1: 2007 to avoid noise generation.
      The Supply air plenum box includes an internal baffle plate to homogenise the airflow over the swirl area.

      Product Description

      • SDPSide Entry plenum box to suit SDCH Diffusers
      • FDCCord-operated Flap damper (optional)
      • FDQQuadrant-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)


      • Galavnised steel, stitch fixed
      • Side entry spigot with optional airflow control damper
      • Oblong holes on top plate for easy drop rod installation
      • Internal baffle plate for Supply air diffuser


      • SDPGalvanised sheet steel


      * Please note the total installed height assumes an overlap of 30mm on the diffuser neck / plenum connection.

      Product Specification

      Related links

      Plenum boxes installation and maintenance

      SDCH High Capacity Swirl Diffusers

      Plenum Insulation Thermal & Acoustic Specification

      Plenum lining foam Polyester

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