Save 50% of the floor space used by conventional files! For highly active files and records. Each Starter Set and Add On Unit includes adjustable 12 deep shelves, shelf supports, and five file dividers per shelf. Heavy duty rolled steel construction. 200 to 300 lb. load capacity per shelf with weight evenly distributed. Assembly required. File ShelfComponent Type File Shelf Add On Unit Global Product Type File ShelvesComponents Colors Sand Number of Shelves 7.