1-Way Ceiling Diffuser -

1-Way Ceiling Diffuser

Product Overview

Louvre faced ceiling diffusers are constructed entirely from aluminium including the frame, blades and centre core.

CVE Shop louvre faced diffusers are lightweight and will not rust nor corrode. They feature a welded core & frame for strength.

They provide excellent diffusion performance, and are suitable for surface mounting in plasterboard ceilings or lay-in ceiling grids (600mm x 600mm grid). Select CVLFD1-450 for the tile replacement size.

The removable core, makes them easy to install, clean & access any dampers located behind the diffuser.

The louvre faced ceiling diffuser is suitable for use where cooling is required in areas of high heat and high humidity, and also to suit heating & cooling applications in cooler temperatures.

To obtain a varying distribution pattern, triangular blanking plates can be fitted behind the louvre, thus maintaining a uniform face appearance.


  • Consistently popular diffuser style
  • Attractive louvred blade pattern
  • Extruded aluminium construction 
  • Removable spring loaded core for easy access to ducting or volume control damper
  • Diffuser core can be blanked to restrict air flow
  • Opposed blade damper can be used to balance air flow.


The overall face size can be found by calculating neck size (nom) +145mm. For example:

CVLFD1-450: The overall face size is 595mm x 595mm.

CVLFD1-450: The neck size for plenum box connection is 450mm x 450mm. 


Manufactured from extruded aluminium to BS 1474. Frames and all blade corners are mitred, welded and finished to give a superior appearance.


Standard finish for this product is RAL9010 White. Also available in Mill, Anodised or alternative powder coated colours to suit your requirements. For special finishes please call for pricing.


Plastic top entry pan adaptors or Galvanised Steel Plenum Boxes are available to suit this product.

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Showing 1 - 5 of 5 results
150mm x 150mm One Way Blow Louvred Face Diffuser - White
225mm x 225mm One Way Blow Ceiling Diffuser - White
300mm x 300mm One Way Blow Ceiling Diffuser - White
375mm x 375mm One Way Blow Ceiling Diffuser - White
450mm x 450mm One Way Blow Ceiling Diffuser - White
All prices include VAT (where applicable)