This is the essential sliding pocket door hardware that brought sliding doors into the 21st century, the only complete pocket door system on the market and is widely used throughout the industry for both new build and refurbishments. The Self Closing System can be purchased in conjunction with any size Kit as well as the BIAS (Soft Closer-one direction). The Self Closing mechanism is an ingenious system that is completely enclosed inside the frame and allows the door to close by itself, automatically with no input from you whatsoever.