【Use as Box Spring】You can buy queen box spring cover separately with our queen bed frame combination into queen box spring to provide support for your high-quality mattress. 【Optimal Support for High Mattresses】Specifically designed to fit high mattresses with ease, our Askeld queen size box spring enhances your sleep quality and bedroom aesthetics. Ideal for those who prefer elevated comfort. 【Reinforced Steel Slat Structure】The queen size box spring has two more supporting steel slats than the others, witch experience stability like never befor. Designed to be sturdy and noise-free, it ensures uninterrupted sleep night after night. 【No Box Spring Needed】Elevate your bedroom setup with our Askeld 9 inch high queen size bed frame, designed to support your high mattress without the need for a box spring. 【Easy Assembly】 Assembling your new bed frame queen is a breeze, thanks to our clear instructions. Designed for queen size mattresses, it's a perfect match for standard and high mattresses alike.