Make sure your new mattress gets the foundation it needs with these metal support rails from Julien Beaudoin. These metal rails were created to add additional support to your wooden bed slats, giving your mattress and boxspring the backing they need to help maintain the manufacturer's warranty. Designed to fit into any full, queen or king bed, this set of three rails can be easily moved and locked into place. Headboard, footboard, wooden slats and side rails are not included.