Mantua Premium Platform Bed Base in Silver, Fits California King Mattress, Replaces Box Spring and Bed Frame, Room for Storage Underneath, No Tools Required NO BOX SPRINGS NEEDED: Provides all the support necessary for most modern mattresses without the extra bulk of a box spring or foundation. FREE UP UNDER-BED SPACE: Because the Premium Platform Bed Base stands 14 inches off the floor, the space under your bed becomes usable for added storage. FOR CALIFORNIA KING MATTRESSES: Fits standard California king-size mattresses as standalone frame or within your existing wooden bed frame. QUICK, EASY ASSEMBLY: No tools needed  simply snap and fasten parts into place for setup. STURDY AND RELIABLE: Frame is tested to hold up to 2,000 lbs per base.