Perforated Metal Mesh 1 exact size 2 easy to install 3 excellent wear life and durable 4 uniform sound abatement Perforated metal mesh materials: galvanized plates, cold plates, stainless steel plates, aluminium plates, aluminium magnesium alloy plates, etc.Usage: on the filtration of auto gas engine; the classification and filtration of mine, medicine, cereals and grains; indoor sound insulation ...