These Perforated Metal Sheets are made of Aluminum sheet,16 Gauge thickness, 0.2" round holes (about 5 mm), 0.12" (about 3 mm) Dislocation triangle arrangement, Sheet Metal With Holes is suitable for Metal Sheet Decorative, Burn Barrel Lid, BBQ Grill, Car Grill, Speaker grille,Perforated Metal Screen, Burn Barrel Ember Retainer, Metal Grates for Drainage, Fish Pond, Garden, Small Animal Protection, Corten Steel Panels for Oven, Sheets of Metal for Metal Grates for Drainage