Hospitality Bed No Sag Mattress Slats - Center Support - Universal Size Adjusts From Full to Cal King - Adjustable Leg Height Fully Adjustable to accommodate a variety of bed frame sizes including Full, Queen, King and Cal King Takes place of wooden cleat, the leg can go down to 4" for use on bed that is 4" from the floor to the foundation Amazing Height Adjustment from 4 inches up to 15 inches Heavy-Duty Support for Thick Mattresses, protects your side rails from bowing or bending Can hold over 2,000 lbs