This silver twin over twin metal bunk bed adds modern style and comfort to any bedroom while saving space. Crafted with a strong steel metal structure, it ensures durability, stability, quiet noise-free use, and large bearing capacity, plus safe stairs for easy upper bunk access. No box spring is needed-it works with all mattress types. The package includes clear instructions, all parts and tools for hassle-free assembly. Weight limit: 250/350 Lbs. Assembled dimensions: 77.20"L x 41.30"W x 65.00"H product weight: 77.44 lbs. Delivered as 1 set in 1 carton (package size: 81.10"L x 14.57"W x 5.90"H, 88.00 lbs).