Also referred to as H-clips and panel edge clips, plywood clips are small metal brackets that are placed between the unsupported edges of plywood sheathing so it can effectively reduce the support spacing. It helps stiffen the plywood. These clips are inserted over the edges of the adjacent plywood panels to help reduce deflection of the panel edges between the framing members. It’s usually used for roof sheathing. The plywood clips are inserted by hand and are done in conjunction with the installation of the sheathing.