Perforated metal screen is metal that has a series of holes punched into it. Over two hundred and fifty grades of perforated metals are held in stock in a number of hole types, patterns and thicknesses. Mild Steel, galvanised steel, stainless steel type 304 and 316, and aluminium are all standard lines. Sheets and half sheets up to 5mm thick with holes sizes 0.5 to 20mm can be purchased by the sheet, cut to size or custom fabricated.