Do I need a box spring, and what height should it be?

No box spring is required; this mattress's 1000-coil core is self-supporting on any flat, rigid foundation, platform, or slats under 3 inches apart. If you do add a foundation for height, note this pillow top already stands 15.5 inches tall, so a low-profile 4-to-5-inch foundation usually sets the bed at a comfortable height. A tall 8-inch box can leave the total bed higher than many people find easy to get into.

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