Strong Bed Frame: Made of solid wood and PW board Support with 12 wood slats(50X15mm) whose root opening is 135mm. the prevents sagging and increases mattress life. Quiet Sleep design: Foam padded tape with strong support legs is added to the steel frame for noise free use and non slip tape on the wooden slats prevents your mattress from moving NO Box Spring Need: Sturdy wooden slats support and extend the life of your latex, memory foam or spring mattress without the need for a box spring Easy assembly: Smartly packed all parts with Instruction and without any tools in one box. Only takes under one hour to assemble. B1001