Industrial-duty trays hold heavy items, yet are lightweight. Labeling area on each tray (labels not included). Stacks with matching plastic risers. Durable plastic. Two trays plus four 3" and four 5" plastic risers per set. 5" risers allow for 6-1/2" storage capacity in bottom tray. Each tray: 11-1/4w x 14-3/4d x 2-1/2h.