Easily assembled, structurally strong pocket door frame designed for fast installation in standard 2 x 4 timber or steel frame stud walls typically sheeted with drywall. Versatile frame can be adapted for use in thicker walls or cut down to accept any smaller size door. Removable aluminum track with low friction convex track rails, guaranteed jump proof smooth rolling tricycle hangers, rust resistant zinc plated steel reinforced timber split studs and self adjusting floor anchors.

https://johnsonhardware.com/1500-series-pocket-door-frame-kits

https://johnsonhardware.com/Content/Images/uploaded/Installation/PD/IN1500PD.pdf