The Vintage Eldon & Rubbermaid Stackable Desk Letter Paper Trays (for 8.5" x 11") are 2 tiers each and can stack together for 4 tiers. These organizers are made of durable plastic in a sleek black/smoke color. Manufactured in the United States, these stacking trays are perfect for organizing letters, papers, and other desktop items. The stackable design allows for easy storage and access to your documents, making it a practical and stylish addition to any office workspace.