The Shadowline Diffuser Square a flangeless internal ceiling grille that sits flush with the ceiling, allowing air to be channelled through ventilation systems or air conditioning systems. The diffuser has a square profile with a centre panel that is ready for painting, resulting in a discreet finish that matches the ceiling or wall that it is mounted in. Designed in Australia by Expella, it has been engineered to optimise airflow and efficiency.

Download Shadowline Diffuser Square fact sheet

White
$198
Details
Scope of use

Bathroom and laundry exhaust grilles for inline ventilation systems.

Features
  • Sits flush with the ceiling once installed
  • Fine textured centre panel finish (resembling gyprock) that is ready for painting, to provide a finish that is consistent with the ceiling
  • Designed to optimise air flow and improve ventilation system efficiency
  • Manufactured from durable, non-corrosive and high-quality
  • ABS plastic – an ideal material for channelling damp air
  • Low profile design for restricted ceiling space
  • Easy to install
  • Low 148mm profile, ideal for restricted ceiling space
  • Acts as a service panel for system maintenance
  • Easy to clean, simply wipe with a damp cloth as required
  • Designed and engineered in Australia by Expella
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Verified ArchiPro Member1 year · Since 2025