Does this mattress need a box spring?

No box spring is needed. This Euro top requires only a firm, even surface, so a platform bed, an adjustable base, or slats spaced under 3 inches apart all work. A box spring is fine if your frame is designed for one. Because the surface is soft, even support underneath matters most: widely spaced slats or a sagging base let the plush Euro top settle unevenly and undercut the deep, balanced cradle.

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