[400LBS Heavy-duty Metal Supports]: With heavy-duty metal material, the bunk bed frame is built to last for years to come, and each bed holds up to 400 lbs for reliable use. Besides, the spray treatment promotes rust protection and anti-wear protection, and extends its service life. [Practical Safety Details]: The 14" upper guardrails keep kids from falling, and provides them with full sense of security. In addition, the built-in ladder makes it easy for teens to climb up and down and adds safety. [Utilize Space Efficiently]: The twin over twin bunk bed brings comfortable sleeping areas for kids or teens to share, which greatly maximizes room space. What’s more, the 10" under-bed space is convenient to store and clean. And it is compatible with trundle(not included) for extra need. [Multiple Use Occasions]: The space-saving bunk bed fits seamlessly into different space like bedroom, kids room, guest room, etc. Meanwhile, it brings sophistication and elegance to upgrade your space. [Hassle-free Assembly]: The package includes all needed parts and easy-to-follow manual, helping you conveniently complete the assembly. No box spring needed, and the recommended mattress thickness: 6"(not included). Description: The metal bunk bed is a practical addition to your home. Consisting of upper bed and lower bed, the twin over twin bunk bed is suitable for limited space. Besides, the 10” under-bed space is perfect for boxes, toys, etc and keeps room clean and tidy. The bunk bed twin is constructed of sturdy metal, and can support up to 400 lbs on each layer. Plus, the built-in ladder helps kid climb, and the safety guardrails keeps them secure to avoid falling. It matches a variety of home decor styles, and adds modern touch to your home. Features: Heavy-duty metal material for strong bearing capacity Upper and lower guardrails protect kids from falling Built-in ladder ensures convenient climbing and adds safety Vertical structure for 2 kids to sleep, offering space-saving use Sufficient under-bed space organizes belongings and is easy to clean 16+16 Sturdy slats for a comfortable and stable sleep experience Easy to assemble with clear manual, no box spring needed  Specifications: Color: Black/White Material: Metal Overall Dimensions: 78" x 42" x 60" (L x W x H) Height Between Bunk Bed: 32" Height of Upper Guardrail: 14" Clearance from Ground to Bed: 10" Recommended Mattress Thickness: 6"(not included) Weight Capacity of Upper Bed: 400 lbs Weight Capacity of Lower Bed: 400 lbs Net Weight: 89 lbs Package Includes: 1 x Metal Bunk Bed 1 x Instruction