Projection mesh is a kind of expanded metal grating for safety. Metals applied for expanded gratings include stainless steel and galvanized steel. LEARN MORE We feature another Expanded Metal Grating called Projection Mesh. Projection Mesh Expanded Metal Safety Grating features small tooth-like projections on the upper surface of the mesh. These projections provide an excellent non-slip surface where additional anti-skid surfacing is desired. Projection Mesh Expanded Metal Grating is available in carbon steel in 2 and 3 pounds per square foot and in aluminum a 1 pound per square foot.