What foundation does this mattress need?

A firm, flat, fully supportive base, not a springy traditional box spring. A solid platform, a slatted frame with slat gaps under 3 inches, or a low-profile box foundation all suit it, and it is adjustable-base compatible. Even support keeps the 1250-coil 5-zone system level so the medium feel stays true and the lumbar zoning works. Given the 14-inch height, a low base keeps the surface at a comfortable height, and a sagging base voids the warranty.

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