5.0 Back stops are formed of 18 gauge steel with a 7/16" channel formation at the top and a 7/16" stiffener flange at the bottom. Its face is slotted on the same centers as the shelf to receive and retain file divider tabs. Ends have one shoulder rivet with a 7/16" diameter head. Rivets are set in keyholes on the inner wall of the back uprights posts. Back stops also act as a stop for files, and are used on single entry only.
6.0 Center stops are formed of 18 gauge cold rolled steel. They are 3" high with mounting holes on 9/16" bottom flange, and a 9/16" box channel at the top which acts as a back stop with equal filing depth from both directions. The face is slotted to retain file dividers on the same centers as the shelves. Center stops are attached to the center of double entry shelves with plastic plugs or bolts and nuts. X-ray center stops are the same as above, except overall height is 7".
Letter File Divider
7.0 File dividers are stamped from 20 gauge steel with two embossed tabs to enter matching slots in shelf and a retaining tab on the back edge to locate and stabilize divider against back stop or center stop. Dividers are self locking on the shelf and are available in depths of 8" or 11", and are 8" high.
8.0 Backs are formed from 24 gauge cold rolled steel and are held in place by their reverse flanges on each side. The side edges are formed in two reverse 90 degree bends to provide flanges 3/8" and 5/16" wide. The flanges fit around the post and hold the back in place by retaining the flanges between the shelf support, the notch in the shelf and the post. The top and the bottom of the back have stiffeners for additional strength. Backs of 88" high or less are of one piece construction, while backs over 88" high are of two piece construction, connected with a back splice.