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SDFS-P Perforated Face Swirl Diffusers

    • Product Details


      Waterloo Air Products range of perforated face, fixed blade swirl diffusers presents an attractive and aerodynamically efficient alternative to conventional circular or square ceiling air terminals.

      The diffusers are designed to produce a horizontal, radial air pattern with a turbulent, high entrainment jet characteristic and are ideally suited for applications with high heating or cooling differentials.

      Manufactured from aluminium with press formed blades, the units have an aesthetically pleasing perforated face which has Ø 4.5mm holes on an 8mm pitch, giving a free area of 49.7%. They are available in a range of 4 standard ISO sizes in 3 different frame configurations to suit 4 nominal ceiling grid sizes.

      The steel duct mounting collar can be used as a means of fixing and supporting the diffuser from rigid ductwork, or alternatively, ceiling support brackets (supplied as standard) can be fitted for use with flexible ducting.

      Product Description

      • SDFS-PPerforated face swirl diffuser
      • SDFS-P-EPerforated face extract diffuser
      • DMDuct collar
      • WTPSide entry plenum box
      • FDC1 Cord operated flap damper
      • FDQ1Quadrant operated flap damper
      • LINED 6mm acoustic lining (optional) reaction to fire class C-s3-d0 to EN 13501-1: 2007

      Please note the duct collar is not required when ordering diffusers with plenums.


      PPG9010 (RAL 9010 Gloss - 80% Gloss White)
      PPM9010 (RAL 9010 Matt - 20% Gloss White)
      PPM9006 (RAL 9006 Matt - 30% Gloss Silver)
      Other colours available on request


      SDFS-P diffusers are available in ISO duct sizes ranging from 160mm to 400mm diameter, with 3 frame options to suit ceiling grid sizes of 300, 500, 600 & 750 square.





      Product Specification

      Related links

      WTP Plenum Box

      FD Spigot Control Dampers

      Plenum Insulation Thermal & Acoustic Specification

      Waterloo Mill Finish



    • Product Images








      SDFS- P Perforated supply diffuser with WTP plenum


    • Product Model Data

      Frame Styles and Grid Sizes



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