The Sealy Posturepedic California King Foundation is a 9-inch stable support box spring set designed to pair with California King mattresses. It is sold as a bundled set of two matching foundation pieces that fit together side by side to form a complete California King-sized base, making it easier to maneuver through doorways and stairwells during delivery and setup.

The two-piece design provides a firm, supportive base that helps extend the life of your mattress and maintains proper sleep surface height. The fabric-covered frame offers durable construction compatible with Sealy Posturepedic mattresses and most other innerspring or hybrid mattresses. With a 9-inch profile, it adds substantial height to the sleeping surface and complements the full support system of a Posturepedic sleep set.