An open roof frame over the platform gives this bed its shape and something to hang string lights, bunting or fabric from - the decorating is left to whoever sleeps in it. Guardrails stand 11 in around a 76 x 39.5 in platform, with 47.5 in of headroom to the roof beam. The trundle measures 75.5 x 40.5 x 11 in and rolls out from the 9 in gap underneath, giving a second twin bed for a sleepover. Both levels carry 200 lbs on 8 and 7 plywood slats, so no box spring is needed. Use a 6 in mattress above and a 5 in one below. Pine, plywood and engineered wood in white, 83 lbs.