Does this firm tight top need a box spring or foundation?

Yes, this Chiro Medic 8" Firm Tight Top needs a solid foundation, a box spring or sturdy slatted base, because a continuous-coil innerspring relies on even support beneath. Use slats spaced under 3 inches apart or an intact box spring with no broken slats. Unlike a foam bed, this 8-inch spring unit can flex unevenly on a weak base, shortening its life and letting coils work loose. A firm, level foundation keeps it supportive and protects the 10-year warranty.

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