HARDWOOD CONSTRUCTION: Headboard, trundle, and frame are crafted from durable hardwood and veneers for long-lasting strength. NO BOX SPRING NEEDED: Sturdy slat system supports your mattress and promotes airflow for a cooler, more comfortable sleep. FULL TRUNDLE INCLUDED: Smoothly rolls out from either side and accommodates mattresses up to 8" high; TRUNDLE DIMENSIONS: 53.82" (D) x 74.76" (W) x 11.61" (H) WEIGHT CAPACITY: 800 lbs ASSEMBLED DIMENSIONS: 77.24" (L) x 56.93" (W) x 44.29" (H)