Glideaway K80 - King - Flexing Rail System Hook-in For use with King size wood headboards, footboards, & wooden side rails with wooden lip (NOT Included) Includes hook in type side rails & 3 cross support bar with 7 legs Adjusts from bed heights 8" - 11" tall Rails are formed from 4 inch wide carbon steel eliminating need for wood slats Read Important Details Below on Product Description