Guardrails 13.5 inches high wrap the full perimeter of this floor bed, and the entry door latches shut so a toddler stays put through the night. Slats sit just 2.5 inches off the ground, low enough that a child climbs in and out without help, which is the point of a Montessori setup. Pine wood with plywood slats and middle support legs carries 330 lbs, so an adult can lie down for story time, and the platform needs no box spring.