Products Home/Products/Floor Grilles/Heavy Duty Floor Grille 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 Heavy duty floor grilles are built with heavy gauge blades and welded together on the frame, and they are mainly used for computer data rooms. Available sizes: 595×595 face size 603×603 face size Available colour: mill