The medium-sized double bed frame does not require a spring box. It features a large metal platform frame with a 35.56 cm storage space, making it easy to assemble the mattress base

[Strong Metal Frame]: King box spring features a strong metal frame, which ensures the stability and durability of the mattress [Strong Metal Frame]: King box spring features a strong metal frame, which ensures the stability and durability of the [Quiet and Noiseless]: King bed foundation adopts a silent design, no matter how you move or turn over, it will not make any noise, allowing you to maintain a comfortable sleeping environment. [Extra Large Load Capacity]: This mattress foundation has a maximum load-bearing capacity of 3000 lbs, which can meet the needs of most people and provide you with strong support. [Quiet and Noiseless]: King bed foundation adopts a silent design, no matter how you move or turn over, it will not make any noise, allowing you to maintain a comfortable sleeping environment. [Extra Large Load Capacity]: This mattress foundation has a maximum load-bearing capacity of 3000 lbs, which can meet the needs of most people and provide you with strong support. [Easy Cleaning]: 9 inch box spring with fabric cover only, can be quickly disassembled for cleaning. It helps to better mattress protection. [Easy to Assemble]: The box spring packaging with detailed installation instructions, according to the instructions of the installation of the fastest possible 10 minutes to complete the assembly. [Easy Cleaning]: 9 inch box spring with fabric cover only, can be quickly disassembled for cleaning. It helps to better mattress protection. [Easy to Assemble]: The box spring packaging with detailed installation instructions, according to the instructions of the installation of the fastest possible 10 minutes to complete the assembly.