This twin over full bunk bed ships in 2 boxes that may arrive on different days, and if only one package is received, customers are advised to contact support. The upper bed frame measures 78" x 40" x 12" (L x W x H), the lower bed frame is 78" x 55" x 12" (L x W x H), and the trundle bed measures 75.5" x 40.5" x 10.5" (L x W x H). Designed as a 3-in-1 convertible bunk bed, it includes a twin upper bed, a full lower bed, and a twin trundle bed, comfortably accommodating up to four people. The bunk bed can be detached into two independent beds for flexible room arrangement, while the trundle features four smooth rolling wheels for effortless use. Constructed from solid pine wood, the frame ensures sturdiness and durability, supporting up to 350 lbs on the upper bed and 400 lbs on the lower bed. Multiple evenly distributed wooden slats provide reliable mattress support without the need for a box spring. Safety is ensured with full-length guardrails on the upper bunk and a built-in 3-step