These mobile multipurpose, space saving racks allow flexibility in holding, storing and transporting pans and trays of product and for busing empty pans and trays. Hi-tensile strength 1'' square aluminum alloy tubing, is used for frame and cross supports. The Aluminum alloy reinforcing bars give added strength and rigidity to the rack. 3-1/8'' spacing between tray slides to optimize performance of the rack. Pan slides constructed of extruded aluminum alloy angle and welded to the frame. The bearing surface has raised beads to keep pans from shifting on slides. Knock down construction; shipped unassembled. Four 5'' casters, two with brakes. Open Tray Rack, mobile, holds (18)18'' x 26'' or (36)18'' x 14'' trays, alum. tubular construction, closed sides, welded slides 3-1/8'' O.C., knocked down, w/4 5'' casters (2 w/brakes), NSF