Solid shelves are a solution where dirt, dust and spills are a potential problem. The solid flat surface is easily wiped down and the marine edge perimeter helps retain spillage. The double hemmed 18 gauge galvanized steel gives the solid shelf excellent strength characteristics. Solid Stainless Steel Shelves are made with 304 Stainless. All solid shelf units consist of 4 shelves and 4 posts. Additional shelves may be purchased separately. Mobilize starter shelving unit using optional mobile kit WR-00H. Units with Add-On kit cannot be made mobile.