Do I need a box spring with this mattress?

No box spring is required. This 14-inch plush hybrid needs only firm, even support underneath: a platform bed, slats spaced under 3 inches apart, an adjustable base, or a solid foundation all work. A traditional box spring on a frame is also fine. Even support stops the 800 pocketed coils from dipping through wide gaps, which preserves both the plush feel and the 10-year warranty.

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