Save 50-Percent of the floor space used by conventional files For highly active files and records Each Starter Set and Add-On Unit includes adjustable 12-Inch deep shelves, shelf supports and five file dividers per shelf Heavy-duty rolled steel construction 200-Pound to 300-Pound load capacity per shelf (with weight evenly distributed) Assembly required Folding Machine Type: N/A; For Mimumim Sheet Size: N/A; For Maximum Sheet Size: N/A; File Shelf/Component Type: File Shelf Add-On Unit