Orthopedic / Serenity Box Spring
Real working modular box spring with more wire and an additional wood slat for superior support and shock absorption to help extend the life of the mattress.
The Original Mattress Factory offers a wide selection of hand-built California king-size mattresses. California king-size mattresses are 72 inches x 84 inches (± 1 inch). Our California king-size mattresses are available in 10 innerspring and three foam models, including two-sided and one-sided models and in comfort levels from soft to hard. We highly recommend you pair your new mattress with a real working box spring, as well as a heavy-duty frame that features a center rail for support. Split box springs come standard on all California king-size mattress sets. If you have concerns about being able to easily get in and out of bed due to the height of the mattress, you may want to consider a low-profile box spring. All OMF California king-size innerspring mattresses are hinged to enable you to fold the mattress for easy transport.