Perfect for puzzles, paper and manipulatives. Cubbie-tray openings are 83⁄4" wide x 14" deep x 5.5" high. Cubbie-Trays not included. • KYDZSafe corners & edges are rounded to minimum of 1⁄2" radius. KYDZSafe kickplates prevent pinching & lost objects. KYDZSafe 15" depth adds increased stability & 25% more storage than competitor's 12" depth. • KYDZStrong materials are guaranteed to last. KYDZStrong dowel-pin construction adds stability & strength. KYDZStrong Recessed backs give stability & structural integrity. • TRUEdge is permanently thermo-fused to furniture, is moisture-resistant, and prevents germs from getting into the board. TRUEdge also comes in multiple colors. • MAXBrackets are heavy-duty casters that make it easy to support and move furniture. Wheels are made of hard, non-marking rubber and a three-point-connection bracket adds triangular strength.