Square and Rectangular Louvre Face Ceiling Diffuser (SA)


Square and Rectangular Louvre Face Ceiling Diffuser (SA)

Key Features

  • Ultra Slim 47mm Diffuser Depth
  • 14 Square/ Rectangular Air Patterns
  • Removable Core
  • Extruded Aluminium Sections
  • Welded Construction
  • Supply or Return Air Applications
  • Optional Opposed Blade Damper
  • Purpose Designed Plenum Boxes


All diffusers are manufactured from high quality extruded aluminium sections, with inner core located into outer frame using spring and bar with a retention chord fitted to each unit.


A choice of 14 different square or rectangular diffuser air patterns for either 1 way, 2 way, 2 way corner, 3 way or 4 way are available for supply air applications and matching return air. An angular style inner core assembly provides a fixed horizontal air pattern, capable of handling a large volume of air at a given pressure drop and noise level.

Inner cores are easily removable allowing on site access or should internal room layouts be altered, the core may be substituted for an alternative air pattern whilst the frame remains unchanged. To maintain a 4 way appearance, internal blanking baffles can be supplied to give the desired air pattern.

The standard 32mm wide flange is designed for surface mounting or tee bar installation; otherwise a variety of flange styles are available to suit Recessed, Tegular or Spring Tee (clip in) types of ceiling grid systems.


Each diffuser can be fitted with an opposed blade damper. The damper is designed as an air trimming device and is operated via a screw cam through the diffuser neck with the core removed. Purpose designed and correctly selected plenum boxes, in galvanised sheet metal construction, are available to ensure the performance and air flow characteristics of the diffuser.

Matching plenum box or pan adapter, side or top entry circular, square or rectangular spigots available with spigot dampers if required.

For uniform air distribution it is recommended that plenum boxes are supplied with an equalising grid.


As standard the Model SA diffuser is supplied with a polyester powder white finish to RAL9010 (30% gloss), RAL9003, RAL9005, RAL9006, RAL9016. Other special finishes are available on request.

Standard Installation Method

Standard is a plain flange for surface mount by screw fixing through neck or lay in tee bar installation (Type F0 fixing). Access for installation is with the core removed.

Installation Options

Countersunk screw holes in flange (Type F1 fixing). Clip in Spring Tee style fixing, confirmation of the ceiling type and spring tee is required (Type F8 fixing).

Dimensions and Performance

Please see the catalogue available for download below.

Product Documents

Title Type Added
SA Four-way louvre faced ceiling diffuser Brochures about a year ago

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