Serta iComfort Full Size Motion Perfect Adjustable Bed Base Foundation Zero Clearance Design - allows the Foundation to easily fit into platform frames (with or without legs) and sleigh beds. Wall Saver - ensures your sleep set stays in position as you adjust the position of your foundation. This way youll always be close to your night stand and you can use a headboard with your foundation. Free Motion Design - ensures maximum safety. The head and foot lower by gravity while all components have been designed to minimize pinch points. Exclusive ZipFit- attachment system means that your mattress matches seamlessly to the base, with no unsightly metal bar. It also makes it easier to change the linens on your mattress. A full range of Accessories including several leg options (2, 7 and 9 inches with 3 inch extensions that can be added to any legs offered), headboard brackets and casters.