Frame It All 2-inch Series Composite Raised Garden Bed Kit - 4ft. x 4ft. x 5.5in. Dimensions: 48L x 48W x 5.5H in. 38% recycled plastic, 62% sustainable hardwood fiber timbers 2-inch kits are made from 2-inch-thick, flat profile boards Modular system for endless design options that may be expanded Timbers will not rot, warp, splinter, or fade