Side-loading trays are designed to stack neatly without supports for desktop organization. Each tray is made of durable, injection-molded plastic. Ribbed bottom prevents paper from sticking. Use handles to move and carry. Trays will stack with most other brands of desk trays. Product Type: Desktop Organizer Placement: Desktop Recycled: No Recycled Content: 0% Post-consumer-waste%: 0% Assembly Required: No Color: Black Brand Name: OIC