House-shaped framing with a chimney detail turns this twin size Montessori floor bed into a playful toddler bed while keeping the structure simple and open. Four-sided full-length guardrails with a 15.5-in height create a defined sleeping area that helps reduce rollouts. A 19-in wide entrance with a lockable door lets adults control access so children stay within a set boundary. The 75 x 39 in sleeping surface fits a recommended twin mattress about 4-5 in thick, eliminating the need for a box spring.