Stainless Steel Bottom Support Universal Pan Slides (4 Pairs), Tray / Pan slides accommodate: (1) Baker Pan: 17-7/8″D to 18″D x 25-3/4″W to 26-7/8″W or (2) Hotel Pans: 12-7/8″D to 13″D x 20-3/4″W to 20-7/8″W, (16) Sets on 3” Centers per section is the recommended maximum capacity for uprights; units can hold as many as (24) sets on 2” centers per section