Perforated metal applications in interior design The perforated metal sheet is frequently used in commercial and industrial settings and is increasingly finding its way into residential architecture. It is advised to look for the best Metal Supplier Singapore. Perforated metal is a sheet of metal with holes of a specific shape and size that resemble a mesh when viewed from a distance. The holes in the perforated metal can have a standard or unique form, size, and pattern. The perforated metal sheet needs to be thicker the more significant the hole. Custom perforated sheets with holes in various sizes and forms, such as squares, rectangles, diamonds, crosses, and more, are available. Even more distinctive artwork can be produced by adjusting the size, pattern, and placement of perforations.