Does this plush foam mattress need a box spring or special foundation?
No box spring is needed, and one can hurt it. As an all-foam bed, the iComfort Zip needs firm, continuous support under its 13-inch profile: a solid platform, slatted base with gaps under 3 inches, or a foundation. A traditional sprung box spring flexes too much and lets the soft foam sag prematurely. The right flat surface protects the high-density StablCore foam core and keeps your warranty intact.
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