PRACTICAL AND DURABLE METAL: The king box spring is fully constructed with a metal frame. A reliable frame with reinforced joints and heavy-duty metal slats provides optimal support for the mattress, with a max load-bearing capacity of up to 3,600 pounds. LOW PROFILE DESIGN: The king size box springs, at 5 inches in height, provide an ideal solution for taller mattresses. This makes it a great option for individuals who prefer their bed closer to the floor. It can be paired with a standard bed frame or placed directly on the floor, serving as a box spring only. STURDY AND NO NOISE: The latest metal box spring with silent design has a reliable frame with reinforced joints and heavy-duty metal slats, creating a strong construction. It ensures no noise when you move or turn over, providing a peaceful and comfortable sleeping environment. EASY CLEAN BOX SPRING COVER: High-quality fabric cover with great breathability and wrinkle resistance, designed with elastic bands to keep the mattress from slipping, allowing for easy removal and cleaning. SIMPLE ASSEMBLY: The metal box spring king includes all bed frame parts, tools packed together. Clear instructions, useful tools, and numbered parts are provided to help you complete the assembly easily by just following the detailed instructions.