These heavy-duty welded steel files are ideal for high traffic project storage areas. Safely stores both work-in-progress or archival storage of valuable documents, blueprints, graphics, artwork, etc. Can be used individually or stacked for space-saving storage. If your filing needs grow, simply add another flat file cabinet. Museum/archival quality paint finish ensures no out-gassing and that the atmosphere in the flat files has no acidity or alkalinity (ph) created by the finish. Built-in locking system provides secure storage. Extra strength drawer rails provides proper alignment for smooth drawer operation. Heavy steel side roller assembly with case hardened ball bearing rollers. Courtesy stops keep drawers from rolling while in open position. Sheets are protected by rear hood and hinged front depressor which prevents them from curling. Functionally designed label holders and chrome drawer handles. Positive closure keeps drawers tightly shut. Files can also be stacked on an optional 6" high closed base or 20” high open base which includes a lower shelf for extra storage. Inside drawer dimensions: 43-3/8"W X 32-3/8”D X 7/8”H