Abstract: According to the invention, a universal-type slider is provided for adjustable engagement with spaced, slotted uprights associated with a food service cart. Each slider is preferably formed from a single blank of relatively thin gauge bendable material. The blank is preformed with a substantially rectangular body having a mounting tab and gusset plate extending lengthwise beyond each opposite end of the body. The blank is folded in stepwise fashion to define two shelves. The gussets and tabs are respectively folded to reinforce the shelves and provide mounting elements for the sliders.