- Single Trays are sold in boxes of 10
- Double Trays are sold in boxes of 5
- Triple Trays are sold in boxes of 5
- Quad Trays are sold in boxes of 5
- Shallow = Single: This tray size takes up 1 slot
- Deep = Double: This tray size takes up 2 slots
- Extra Deep = Triple: This tray size takes up 3 slots
- Jumbo = Quad: This tray size takes up 4 slots
- The Gratnell Style Replacement Classroom Storage Trays has a manufacturer’s warranty of 5 years