SPECIFICATIONS OF SHELVING COMPONENTS
1.0 Open uprights consist of 18 gauge cold rolled steel posts rolled into a 2" wide hollow "T" or 1" wide hollow "L" shape with keyslot holes punched on 1-1/2" centers, along the inner wall only. There are no holes on the face of the post. The front and back posts are joined by welding 18 gauge spacers to maintain the required distance apart and add rigidity to the assembly. Center spacers are 3" high flat strips. Top and bottom spacers have an 11/16" stiffening flange with two 1/4" holes to allow mounting to floor or mobile bases. All uprights 64" or less have three spacers. Uprights 76" to 88" high that are less than 30" deep have three spacers. All other uprights have four spacers. The "T" uprights are used as common intermediate uprights and "L" uprights are used for row ends.
2.0 Closed uprights have the same specifications as open uprights, except the 18 gauge spacers are replaced by welding 24 gauge closure sheet with a special offset stiffener flange at the bottom of the closure sheet. The flange has two 1/4" holes to allow securing it to the floor or mobile base.
3.0 Shelves are formed of 22 gauge cold rolled steel with 25/32" high channel formation on all sides. The return flange is formed to 120 degrees permitting easier installation. Slotted shelves have shelf divider slots on 2" centers. Outermost slots on thin shelves coincide with the inner edge of the post so a file divider can be used to prevent files from leaning into the upright. Shelves 18" or deeper are punched for center stops.
4.0 Shelf supports are formed of 14 gauge (also available in 11 gauge) hot roll pickled steel, 11/16" high with flat ears at either end. Semi-tubular rivets with a 7/16" diameter head is staked onto ears. Shelf supports for heavy and x-ray shelving are the same as above, except they are 1-1/8" high. Supports are available with single or double rivets. The bottom of single rivet heavy supports can fit flush with the floor, and single rivet thin supports are optional on intermediate levels.