This full-size bed rail crib conversion kit allows your Child Craft crib to grow with your child by converting the crib or toddler bed into a full-size bed. Rails are constructed from pine wood and wood veneers with a child-safe, non-toxic finish. Hardware included. Bed rails simply bolt onto the crib in long front and back sections. Full-size mattress and box spring required, not included. Includes 2 bed rails and 3 mattress support slats. Intended use with Child Craft Kieran 4-in-1 Convertible Cribs, only. Full-size bed frame dimensions: 76” L x 54.25” W x 6” H.