Perforated Metal Mesh is created by punching a series of holes in a solid material. Holes can be round, square, rectangular, slotted, or decorative. It is available in wide range of hole sizes and patterns. The perforated pattern can be straight or staggered. It has an unpolished surface. To improve the service life or beauty, the surface can be galvanized or powder coated. Thickness or gauge Thickness of the metal sheets do not change during the perforation. Normally thickness is expressed in gauge. However, to avoid possible misunderstanding, we would suggest expressing them in inches or millimeters. Width and length The most common width and length are as following 1000mm x 2000mm 1220mm x 2440mm 1250mm x 2500mm 1250mm x 6000mm 1500mm x 3000mm 1500mm x 6000mm However metal mesh also do other sheet sizes according to customers' requirements. Margins Margins are the blank (un-perforated) area along the edges of the sheet. Normally the margin on the length are 20mm minimum, and margin along the width can be 0 minimum or at customers' requests. Hole arrangement Round hole are normally arranged in 3 types: Other hole patterns and hole arrangements can be custom made. Round hole, 60 , staggered Round hole, 45 , staggered Round hole, straight row Cutting & folding metal mesh can do cutting and folding after perforating.