This Wood Box Spring Foundation is for ALL types of mattresses, Recommended for Gel, Memory Foam and Latex Mattresses. Stronger and sturdier compared to the Pre-Assembled Folding Box Spring Foundation! Made from Solid Spruce! Comes with a Cover has FR (fire retardant) for safety. 20 year warranty! King Size: W76″ x L80″ x H8″. Made in USA!