Metal slats and a reinforced frame create a stable twin-over-full bunk bed that supports up to 440 lbs on the upper bed and 660 lbs on the lower bed for teens and adults. The 71-in tall vertical structure with 45.5 in between bunks helps free floor space while still allowing room to sit. Full-length guardrails around the upper bunk and a fixed 3-step ladder provide secure access. The slatted design removes the need for a box spring and leaves 12.5 in of clearance under the lower bed for storage.