Sealy StableSupport Foundation

Sealy’s StableSupport foundation is designed to provide a solid, reliable base that helps mattresses perform as intended over time. Built to deliver consistent, even support across the entire sleep surface, it reinforces mattress durability, minimizes unwanted flex, and is a practical choice for sleepers who want a traditional, no-nonsense foundation that prioritizes stability over added features.

Available in 9" and 5" heights. (Note: There is no king size in this model. You instead need two "Twin XL" models.)