OPTIMUM SUPPORT FOR THE MODERN BEDROOM – For lovers of clean lines, simple silhouettes and undeniable durability, the Mia Platform Bed Frame checks all the boxes to keep you snoozing comfortably and reliably for the long haul STURDY DESIGN - Made entirely of steel framework, this durable foundation will support many years of serious snoozing; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs NO BOX SPRING NEEDED - Reliable and closely spaced wood slats are designed to support and extend the life of your latex, memory foam or spring mattress without the need for a box spring; slats are spaced 3.1 – 3.4 inches apart