Does a hybrid mattress need a box spring?

No, the ChiroPro plush hybrid does not need a box spring. It performs on a platform bed, closely-spaced slats (about 3 inches apart or less), a solid foundation, or an adjustable base. The foam-encased pocketed-coil core provides its own support. An old sagging box spring can undermine the plush feel and may void the 10-year warranty.

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