Keep all of your preschool classroom supplies organized with Sprogs’ 25-Tray Wooden Storage Unit. The roomy cubbies are perfect for organizing toys, books and puzzles or sorting student projects. Baltic birch construction, rounded edges and a UV finish make this unit a durable and safe choice for classrooms. Choose an assembled or unassembled storage unit with or without plastic trays. Add casters for an additional charge to make your storage unit mobile.