The 1515-PLY Clip Set is designed to add structure and increase strength of pocket door walls. 1515-PLY clips attach 5/8" [19/32"] plywood panels to pocket frame structure increasing the rigidity of pocket walls when compaired to a pocket wall without plywood reinforcement. Additionally, the 5/8" [19/32"] plywood panels provide a solid surface for mounting towel racks, cabinetry etc... Plywood panels not included. Plywood panels sized and cut on-site to approperiate dimensions. Plywood panels installed flush with split studs. Drywall directly over plywood panels.