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Perforated Ceiling Diffuser – APCD


Frame: High quality extruded aluminium profiles with 30 mm flange width as standard. 12, 20, 24 mm flange widths are optional.
Perforated panel: 0.8 mm thick galvanized perforated steel sheet.


Perforated ceiling diffuser is a type of diffuser with perforated face. The core is the same as in 4 – way throw ceiling diffuser.  They are also available with an option of individually adjustable curved blades with the option of 1-way, 2-way.3way and 4 way throw air patterns.

  • Frame is fabricated from high quality extruded aluminium profiles with the advantages of corrosion resistance and rigidity.
  • Perforated panel is fixed to the frame by screws. Panel can be removed easily by loosening the screws.
  • Different types of internal cores can be fixed inside the perforated panel as option. Core is fixed to the frame with aluminium pins loaded with steel springs. Core can be easily removable
    and interchangeable to allow for maximum flexibility in installation and maintenance.
  • For supply air diffusers, Perforated sheet is slightly lowered below the centre line. This
    arrangement provides improved horizontal airflow.
  • Perforated Ceiling Diffuser can be manufactured for horizontal 1-way, 2-way, 3-way
    and 4-way throw applications.

Standard finishes:

  • Powder coated colour finish as per RAL colour codes.
  • Flexibility of finish is available as option.

1. Damper (Model: APCD+D)

  • Damper is fixed rigidly to the frame by aluminum rivets. Fixing by spring clips is optional.
  • Damper blades are separated from its frame by nylon bushes.
  • Opposed blade damper is screw operated from the face opening of the diffuser after removing the internal core. Lever operated damper as option.
  • Foam gasket is sealed around the back of the frame as option to avoid air leakage.

2. Plenum / Adaptor (Model : APCD+P)

  • The plenum/adaptor is constructed using G.I sheet. The plenum can be supplied with insulation from the inside or outside as an option based on customer requirement. Insulation material option : rubber foam / rock wool / Fiberglass. 
  • The neck diameter ranges from 100mm – 450mm.

3. Plenum & Damper (model : APCD+D+P)

  • Foam gasket is sealed around the back of the frame as option to avoid air leakage.

Standard sizes:

  • Available in square and rectangular sizes.
  • Any combination of W x D.
  • Non standard sizesare available.

Fixing details:

  • Concealed screw fixing from neck of the diffuser to the duct.

Product Summary:
Product Order Checklist

  • Model 
  • Size
  • Quantity 
  • Plenum details – if plenum required
  • Colour (RAL 9010, 9016, Anodized aluminium finish or other RAL colours).


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