To help prevent serious or fatal injuries from entrapment or falls:
Never allow a child under 6 years on upper bunk bed.
Use only a twin mattress on the upper bed.
Ensure thickness of mattress & foundation does not exceed 9½" and that mattress surface is at least 5" below upper edge of guardrails. Use guardrails on both sides of upper bunk bed. Prohibit horseplay on or under beds. Prohibit more than 1 person on upper bunk bed. Use ladder for entering and leaving bunk bed.