This bed frame premieres a heavy-duty bed support system that is the perfect support for the middle of your bed. It adds stability and supports heavier foam mattresses without sagging. The cross supports are made from heavy-duty steel and the height of the leg is adjustable to fit your bed frame. This system will not allow a wood foundation to bow when screws are used to hold the frame in place. It will never flex in the middle and allow a bed to have a center sag due to the base support. This system will fit most bed frames.