Strong and Durable Steel With Plywood Slats 14 inches with 13 inches of clearance under the frame for valuable under bed storage space.Item Dimensions : 80"L x 60"W x 14"H.Maximum weight recommendation:750 pounds UNDERBED CLEARANCE - A 14 inch platform features 11.8 inches of underbed space perfect for storing extra odds and ends; 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 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 - 3.4 inches apart EASY ASSEMBLY - All parts, tools and instructions are shipped straight to your door in one efficiently packed box for simple set-up that takes less than hour with a friend’s help Worry-free 5 year limited warranty included; mattress sold separately