Cal King 9 Leg Metal Bed Frame with Headboard & Footboard Brackets California King size Bed Frame (does not not work with regular king size mattress/box-spring) Headboard and footboard brackets attach to most headboards and footboards Fits standard Cal King size mattress and boxspring set (72-inch x 84-inch) Wedge-Lock connections, and heavy duty side rails provide superior support Quick and easy assembly, no tools required -