The Sanrui 4-Tier Acrylic Paper Letter Tray Desk Stackable Organizer Tray Is A ?Enlarged Acrylic desk organizer Tray?: 4 Pack, Stake any layer together in a second, Great for holding Letter/8-1/2 x 11 size paper, folders, stationary, desk accessories. ? Modular Design?: Use the Reusable Stacking Tray to Store Messy Documents, Envelopes, Letterheads and Notes and Other Accessories on the Desktop, Which Can Make the Desktop Organized, Stackable Design, You can Freely Combine Layers, Store More Documents, and Place it Stably on the Desktop. ? Acrylic Transparent Tray Shelf File Sorter?: Crystal-Like Transparent Material, High-end Atmosphere, Showing Corporate Style, Transparent Tray Allows you to Quickly Find Stored Items, Very Delicate and Beautiful. ? Sturdy and Durable?: Made of High-Quality PMMA Organic Material, Hand-Polished, with Rounded Corners, The Base is Non-Slip, to Ensure that it will not Slide Easily on The Desktop, as an Office Document Organizer, to Improve the Quality of the Space. ? Wide Application?: Ideal for Classroom Office or Home Office Workspace Storage Organization, Children's Construction Paper, Textbook Storage, Literary Books, Accessories, Business Data Materials, and more.