Does this memory foam mattress need a box spring?

No, and a springy box spring can actually harm an all-foam bed. This mattress needs flat, continuous support underneath: a solid platform, a closely slatted frame, a flat foundation, or an adjustable base. With slats, keep gaps under roughly 3 inches so the dense TEMPUR core stays evenly held. Avoiding a sagging old box spring also protects the structure beneath the cradle and keeps the 10-year warranty valid.

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