Sleep Revolution engineered a unique bed frame that is designed to provide optimum stability and support for any box spring and mattress set. The one durable steel bed frame that is designed to adjust to fit all mattress set sizes from full to cal-king. Features 9 support legs that simply fold out when assembling and are slightly recessed for safety to help prevent hitting your toes when making the bed. Designed with a center 3rd bar for additional support. The two-wheels design is for ease of mobility - simply lift and roll. The wheels lock to keep frame in place. Each support bar features a quick lock system. This bed frame is a no-tools assembly frame. Headboard brackets included. The product is packaged for convenient FedEx/UPS shipping.