Kings Brand Furniture 39''/Twin Size White Steel High Riseer Bed Frame The daybed includes a platform with metal slats for support, Designed for long life and safety, Collapsible trundle fits beneath daybed. Trundle lifts up easily, Ideal for children, sleepovers and guests. The two beds are the same height when opened, "One of the most functional pieces of furniture you can buy". Trundle Beds are a smart choice for many reasons. The metal trundle bed set can be used in the following ways: Space Saving Single - Leave the trundle rolled under the high rise frame and you literally add square feet to your home. Roll the trundle out but leave it in the down position, Or it can be lifted to the same height as the daybed. The metal frame has holes on the front and back so a headboard and footboard can be attached. Simple assembly required. Dimensions: Daybed: 77'' L x 41'' W x 17''H. Trundle : 72" L x: 39" W. The Mattresses is not included it could be purchased separately.