Avery DTR Eco Wide-Entry Tray Sets feature 3 stackable letter trays and a lid. Each set comes with 2 sets of 4 risers so that you can extend the amount of storage space between each tray. Because the trays are wider than they are deep, they fit neatly on top of desks or on shelves. This gives you more space to work around. Because the lid is removable, you can add more trays should you need to. Equally, the lid is sturdy enough should you want to stack something else on stop. Avery are committed to making our office products better for the environment. Black products in the DTR Eco Range are manufactured from 100% post consumer recycled plastic; the blue products 96%. What's more, both colours can be recycled again after use.