Columbia Staircase Bunk Bed with Trundle Bed, Twin Over Full, Antique Walnut Designed for lasting durability using eco-friendly hardwood with protective five step finish Exceeds industry standards for safety, one year manufacturer's warranty Accommodates up to a 9 1/2 inch mattress which is supported by our slat system Converts into separate beds, staircase can be set up at either end Assembly required, mattresses and bedding sold separately