Strong and Durable Steel Strong mattress support with steel slats prevents sagging and increases mattress life.Maximum weight recommendation:350 pounds Eliminates the need for a box spring Assembles easily in minutes / 14 inches of clearance under the frame for valuable under bed storage space 14 inches of clearance under the frame for valuable under bed storage space 5 year worry free limited warranty. Rounded leg design for Twin, Full, Queen, King.