Harper & Bright Designs Twin over Full Metal Bunk Bed, Heavy Duty Metal Bed Frame with Safety Guard Rails This twin over full bunk bed made by sturdy metal provides extra durability and safety. Additional metal slats support mattresses and extend their life effectively. Full-length guard rails surrounding top bunk keeps you child safe and a good night sleep. Contemporary design makes it easy to integrate into your bedroom decoration. It is also an excellent space saver. Getting rid of the heavy spring box, extra space under the lower bunk is created for storage. Weight & Dimensions Overall Product Dimension: 77.24"L x 56.37"W x 53.93"H Detail Product Dimension: Full Bed Dimensions: 77.24"L x 56.37"W Twin Bed Dimensions: 77.24"L x 41.42"W x 12.8"H Guardrail Height: 12.8’’ Distance Between Top and Bottom Bunk: 34.64’’ Distance Between Bottom Bunk and Floor: 6.5’’ The Slats Distance for Bunk Bed: 6.5’’ Ladder Height: 9.84’’ Package Dimension: 78.74 "L x 15.75 "W x 7.68 "H Overall Product Weight: 78.26 LBS Package Weight: 87.52 LBS Weight Capacity-- Upper bed: 400 LBS Bottom bed: 400 LBS Recommended Mattress Thickness: 6-8’’ Specifications: Material: STEEL Box Spring Required: No Number of Slats-- Upper bed: 11 Bottom bed: 11 Ladder: 3 Assembly Required: Yes