You might want to visit our North American website:
Different types of extract air diffusers
Circular ceiling diffuser with nozzles for suspended installation
Rectangular nozzle diffuser for supply and extract air
Extract air diffuser
Perforated extract air diffuser
Circular extract air diffuser for suspended mounting
Circular egg crate grille for transfer/extract air and wall/ceiling mounting
Rectangular perforated diffuser for supply and extract air
Square extract air diffuser
Square ceiling air diffuser for supply air
Exhaust and Supply Air Valves
Egg crate grille
Perforated grille
Fixed Blade Grille
Non-Vision Grille