Hospitality Bed X-Support System 3 Rails, 3 Adjustable Legs FITS: FULL, QUEEN, KING, OR CALIFORNIA KING. The revolutionary X-System center support system is designed to be easily installed and help support your Full, Queen, King, or California King sized bed. Using the included legs, you can assemble this support system to adjust from heights as low as 6-1/2 inches, all the way up to 15-1/2 inches in height (measured from the floor to where the bottom of the box spring rests.) EASY INSTALLATION - SECURE SUPPORT: There are no complicated instructions to follow when installing this center support (although there are instructions in the box, just in case.) Using the "Super Clamp," you easily attach the pieces together to create a medium-duty support system. The Positive-Locking leg design actually gets stronger when you apply the weight of the bed, with super strength to give you peace of mind. FOR USE WITH headboards, foot boards, & wooden side rails with wooden lip (NOT Included) FOR USE WITH BOTH WOODEN AND METAL SIDE RAILS: The X-System Adjustable Center Support System is designed for use with both Wooden and Metal side rails, and is a great way to ensure your rails will not bend or break. The cross slats of this system have pre-drilled holes in the ends where they overlap your side rails, and are easily secured to the bed using the included screws. This ensures your center support system will not move around, and also protects your side rails from bowing or bending. LIFETIME SERVICE POLICY: Please read more about our Policy in the description below.