Twin over Twin Bunk Bed (Siddel Collection) This solid wood Twin over Twin Bunk Bed in white, features full length guard rail, fixed vertical ladder and classic design. Beautiful white color, popular for a girl's room! (Mattress Optional) Twin over Twin Bunk Bed: 79.0"W x 41.7"D x 60.5"H Solid Wood White Finish Full Length Guard Rail Fixed Vertical Ladder