Painted Perforated Aluminium Sheet for Wall Cladding. Perforated aluminium sheet is a popular choice for wall cladding due to its durability, versatility, and aesthetic appeal. It is made by punching small holes into a sheet of aluminium, creating a pattern or design. The holes can be arranged in a variety of shapes and sizes, and the sheets can be painted in any color to match the design of the building. The holes can be regular round, square, rectangle, hexagon, trapezoid or other irregular shapes. And the patterns of layout can be square, stagger or customized layout.