Aluminum Perforated Panel 117000This is a 4' x 8' Gauge 18 Aluminum Perforated Panel with 1 4'' Square Holes, staggered pattern. Perforated metal panels are sheets of metal that have been punched with a pattern of holes or slots. The perforations can be in a wide variety of shapes and sizes, depending on the desired application. Perforated metal panels can be made from a range of materials, including stainless steel, aluminum, and carbon steel, and can be used for a variety of