84.2 inches

GEOMETRY THAT MATTERS - With its asymmetrical geometric upholstered headboard, cozy foam padding and muted grey tone, this platform bed puts a modern spin on traditional design DURABLY DESIGNED - Interior steel framework and dense foam padding add comfort and longevity; Twin size supports a maximum weight capacity of 350 pounds, while all other sizes can support up to 700 pounds NO BOX SPRING NEEDED - Durable wood slats support and extend the life of your latex, memory foam or spring mattress without the need for a box spring; Slats are spaced 2.2 - 2.8 inches apart