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Why do mattress warranties mention a 7 cm slat gap?
In short
Many foam and hybrid warranties require maximum clear gaps of about 7 cm between slats so the mattress cannot hammock into the voids and form permanent impressions.
More detail
Measure the clear gap between slat edges unless the manufacturer defines spacing differently. Sprung slats add flex; solid slats are firmer.
Related searches: 7cm slat gap · mattress warranty slats
Updated 2026-08-03. All answers