Frameless gypsum diffusers that disappear into ceilings.
Ventmann is a European-designed range of frameless gypsum air diffusers that use Coanda effect technology for superior airflow distribution. Unlike traditional aluminium grilles, Ventmann diffusers are made from a specialised gypsum composite that integrates seamlessly into plasterboard ceilings — paintable, invisible, and crack-resistant.
We typically install the P-Circle (Performance Circle) and P-Line (Performance Line) models. The P-Circle is a frameless round diffuser available in 100mm to 200mm connection sizes, delivering radial airflow via a precision Coanda slot.
The P-Line is a linear slot diffuser in 1-, 2-, or 3-slot configurations, ideal for air conditioning applications where discreet linear distribution is preferred.
Both models are Red Dot Design Award nominees and are the preferred choice for architects and interior designers seeking both aesthetic sophistication and technical performance. They prevent the condensation, dark staining, and cracking common with traditional metal diffusers.
Frameless, paintable diffusers that vanish into ceilings — no visible hardware.
Premium aesthetic for restaurants, lobbies, and guest rooms.
Seamless ceiling integration in brand-sensitive environments.
Museums, galleries, and civic buildings with strict design control.
Our team handles everything from design and supply to installation and commissioning across Greater Sydney.