Abstract: A pocket door system with a constant rail system provides a pocket door adapted for sliding into and out of an enclosed wall pocket to enable or prevent egress through a framed door opening. The pocket door includes a roller mechanism mounted at a top surface and a slotted lower guide mechanism mounted at a bottom surface. A floor track with a vertically extending, flat, planar protruding plate element is mounted upon a floor surface is secluded within the enclosed wall pocket. The vertically extending, flat, planar protruding plate element is insertable into the corresponding vertically extending flat, planar slot of the guide mechanism. The roller mechanism of the pocket door system engages an upper track as the lower guide mechanism engages with the protruding element guide wherein the pocket door slides into and out of the enclosed wall pocket without wobbling and dislocating from the tracks during use.