Does this memory foam or latex mattress need a box spring?

No box spring, and a traditional spring box is not ideal. This all-latex EVERGREEN mattress needs a flat, solid surface that fully supports it: a platform bed, a slatted base with gaps under about 3 inches, a bunkie board, or an adjustable base. Wide-spaced slats let the dense latex flex unevenly and can void the warranty. At 10 inches tall it sits low and stable, so it does not need a tall foundation underneath to perform.

Did you find what you were looking for?