This bunk bed is constructed with a heavy-duty metal frame and 21+21 powder-coated metal slats, providing robust sturdiness and a strong weight capacity of 440 lbs for the upper bed and 660 lbs for the lower bed. A mute bar pressed on the metal beam ensures noise-free use without squeaking. For safety, the top bunk is equipped with 14.5"/37 cm full-length guardrails to prevent accidental falls, and an integrated ladder offers easy access to the upper bed. The space-saving vertical design makes it ideal for maximizing floor space in guest rooms, summer camps, or growing families. Closely spaced slats support the mattress without the need for a box spring, while 12.5"/32 cm of clearance from the ground provides additional under-bed storage. Assembly is simple and quick with all necessary tools and an easy-to-follow manual included. The bunk bed measures 77.5" x 59" x 71" (L x W x H) with a 45.5" height between bunks and comes in black or white metal. The recommended mattress thickness is