12-tray mobile storage unit without bins allows letter-size sheets to lie flat to prevent them from being wrinkled. Durable laminate features an easy-to-clean surface. MAXBrackets allow the art center to be moved easily from room to room without causing stress on the wheels and brackets. Wheels are made of hard rubber and won't leave black marks on your floor. TRUEdge is permanently thermo-fused to the edges to prevent chipping. Standard Write-n-Wipe recessed backs can be easily wiped clean. Kickplate prevents children from losing small items underneath.