The AEROVAC® Jet Diffuser are designed for any application requiring a high-performance diffuser, used where air diffusion is required to travel a long distance to the directed area. This is the case in large rooms (halls, cinema, theatre, assembly rooms, etc.)... AEROVAC® Series CEAL format louvres are suitable for intake or exhaust systems where space or cost is at a premium. The Aluminium Exhaust and Fresh Air Louvers are used both internally and externally in buildings for the extraction of re – cycled air, intake of... The AEROVAC® Disk Valve model has been designed for both supply and exhaust applications. Disk Valve are used as extract air devices in small rooms. For variable and constant volume flows & for walls and suspended ceilings.