Solid shelves are a solution where dirt, dust and spills are a potential issue. The solid flat surface allows for storage from small to large items and the marine edge perimeter prevents spillage. The double hemmed 18 gauge galvanized steel gives the solid shelf excellent strength characteristics. All solid shelf units consist of 4 shelves and 4 posts. Mobilize your starter kit using optional mobile kit WR-00H. Solid shelves are a solution where dirt, dust and spills are a potential issue. The solid flat surface allows for storage from small to large items and the marine edge perimeter prevents spillage. The double hemmed 18 gauge galvanized steel gives the solid shelf excellent strength characteristics. All solid shelf units consist of 4 shelves and 4 posts. Mobilize starter Kit shelving unit using optional mobile Kit. Finish: Galvanized Steel.