Products Home/Products/Grilles/Perforated Grilles Product Categories Aluminium Eggcrates Ceiling Diffusers Grilles Swirls Linears Jet Diffusers Floor Diffusers Weather Louvres Plastic Grilles Supply Air and Plenums Fire Damper Dampers Zoning Accessories Perforated grilles are made of aluminium profile and perforated steel plate. Different perforation patterns are available to need the requirement. Standard sizes595×595Standard colour available: RAL9010 and RAL9016