Stackable trays provide easy access to contents. Trays keep items separate and organized. Space saving design is convenient to store away. Includes 4 removable dividers that easily slide into slots. Dividers can be crossed to sub-divide trays. Designed to fit 12x12 paper. Measures 12.25L x12.25W x 4.25H per tray (includes 3 trays and 4 dividers). Snap 'N Stack technology allows you to add on additional trays as needed.