A twin bunk over a full bunk lets an older child and a younger one share a room, or gives a guest a wider bed below, and this gray version keeps everything low: 50.5 inches overall height on a 94.5 x 56.5 inch footprint, with the upper twin frame 42 inches wide. Stairs with 14 x 14.5 inch steps lead up and double as storage compartments measuring 23.5 x 13.5 x 12.5, 23.5 x 13.5 x 11.5 and 11.5 x 13.5 x 11 inches. The upper bed has full-length 12.5 inch guardrails and is rated for 200 lbs; the lower full bed takes 250 lbs and has its own headboard and footboard. Plywood slats support 6 inch mattresses on both levels, so no box spring is needed. Pine wood, plywood and engineered wood make up the frame, which weighs 155 lbs and ships in two cartons for assembly.