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Air Diffusers Ltd.                             Unit 77, Enterprise Centre Michael Way, Warth Park Way, Raunds, 

+44 (0) 1933 697471


LINE model diffusers are an elegant and flexible interior design solution. Using this model, it’s possible to create strikingly unique interior elements or, in contrast, make the diffuser almost invisible.
Ventmann diffusers integrate seamlessly into your interior design, making no compromise between fresh air and clean design.
1 Slot Linear Diffuser
2 Slot Linear Diffuser
3 Slot Linear Diffuser
1 Slot Linear Diffuser Mounted
2 Slot Linear Diffuser Mounted
3 Slot Linear Diffuser Mounted

By selecting the right model size, it becomes easy to create interesting ceiling designs. Alternatively, it is also possible to create an illusion of no diffuser at all. In the event of form over function, our LINE diffusers can also be used as imitations, to create an endless line without breaks. This way, unique interior design solutions can be made real.

LINE diffuser models are more than just interior design elements, but a practical solution. They are the first diffusers on the market that can be painted with the same paint as the rest of the surface. Our models are varied and can fit a vast majority of situations:

  • 1-slot, 2-slot or 3-slot types are available from LINE models.
  • 625mm; 1000mm; 1250mm – you can choose these standard lengths of the LINE diffuser models.
  • 12mm or 18mm – you can choose these standard slot widths of the LINE diffuser models.
  • Each diffuser will be paired with acoustic junction boxes that can be fitted into the ceiling.


Technical Information

A frameless gypsum linear slot diffuser suitable for plasterboard ceilings and walls. It is plastered in can be painted with the same paint as the rest of the surface, resulting in a completely seamless appearance. Once installed, the diffuser is permanently fixed into place without affecting ceiling height.

LINE diffuser delivers high entrainment airflow designed to mix with the existing air.

All LINE diffusers can be combined to create continuous linear designs with no line breaks – perfect for sleek, streamlined interior design.

Available in 1-slot, 2-slot or 3-slot models.

Price includes acoustic box.

Materials: Gypsum composite body with black powder coated steel backing. Galvanised steel acoustic box.

Diffuser dimensions:

22.5mm diffuser depth

12mm or 18mm slot width

625, 1000, or 1250mm slot length

  • Supply or extract
  • Can be combined to create longer lengths if required
  • Includes acoustic box

Even standard diffuser models can be flexibly adapted to your needs. They can be connected in an infinite line with unobtrusive connections. These unique solutions do not require lowering of the ceiling height. Our gypsum diffusers can be used for air supply and extraction.

Installation Guide

Ventmann diffusers are much more than an interior design solution: they are engineered to deliver comfortable airflow exactly where you need it most. For detailed technical specifications, download our full catalogue now.