Wooden slats provide ample mattress support and the mattress fits snuggly into a 3" deep recess in the bed frame. Sides are finished with sturdy 3.5" wide MDF rails, with openings underneath to provide optional storage space for baskets or tote boxes. This Coal Harbor Platform Bed with Headboard comes in two cartons. Includes Coal Harbor Queen Platform Bed with Headboard in Black Dimensions Queen Size Bed, 69.50"W x 83.25"L x 31.5"H Est. Delivery: 2 to 3 weeks Some assembly may be required.