Shadowline Slot Diffuser


The Shadowline Slot Diffuser is a discreet, flangeless internal ceiling grille that allows air to be channeled through ventilation systems.

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  • Aluminium profile designed for optimal airflow and efficiency with a powder coated finish
  • Creates unique ceiling details – set into the ceiling for a seamless and discreet look
  • Cut to length to suit any length
  • Shadowline Diffuser creates a rigid structure that secures the ceiling sheet
  • Multiple fixing options using clip-in fasteners and is compatible with Rondo suspended ceilings
  • Low profile for restricted ceiling space
  • Designed and assembled in Australia
  • Suitable for supply and exhaust applications
  • To be used in conjunction with an inline fan such as the EMF150 (recommended) and ducting
  • Suitable for interior applications including: bathrooms, laundries, and general kitchen ventilation
  • Can be installed by a home handyman or industry professional (electrician or airconditioning installer)


  • Extension kit (1 metre lengths)
  • Insulated option for ducted air conditioning systems
  • LED Light Strip