Frames and Rails Brown King Roll Slats | B100-14 | by Ashley | Luna FurnitureGive your mattress added support and distribute body weight more evenly with the addition of wooden roll slats. Easily attaches to bed frames thanks to pre-drilled holes.Assembly required;Made of wood with nylon cord;Pre-drilled holes for easy attachment to bed frame;Eliminates need for box spring;Compatible with king mattresses77''W x 77''D x 1''H