This kit is needed to convert your Lifetime 4-in-1 convertible crib for the Royale line of children"s bedroom furniture into a full-size bed. * Includes set of bed rails and cross slats * Sold separately, not included with the crib * Used to convert crib to a full size bed * Easy to install * Assembled Dimensions: 79.9"L x 9.45"W x 7.5"H