... Stainless Steel ,aluminum,galvanized iron,copper 2,hole:round,or as request 3. thickness:0.2mm perforated metalSpecifications1.perforated metal ... , weight saving, air control, filtering, a decorative surface, or simply a non-skid effect.Based on their many qualities ... breed.Packing: Several pieces stacked together and then packed by wooden pallet. Custom packing available at request.Production process ...