Useful for manufacturing Ceiling diffuser,Air Diffuser,air louver,Diffusers Features: 1)Constructed from aluminum,finished in white enamel 2)Four-way frame 3)Removable core for easy installation and maintenance 4)Offers maximum air flow while maintaining low noise level 5)Aesthetically pleasing design 6)Can supply air different distances and at different angles 7)Ideal for residential and commercial reverse cycle air conditioning 8)Size available:1200x600mm;1220x610mm;1200x1200mm;1220x1220mm.