Safety Warnings 1.Follow the information on the warnings appearing on the upper bunk end structure and on the carton . Do not remove warning label from bed. 2 Always use the recommended size mattress or mattress support,or both,to help prevent the likelihood of entrapment or falls. 3.Surface of mattress must be at least 5 in(127mm). below the upper edge of guardrails . 4.Do not allow children under 6 years of age to use the upper bunk. 5.