The PSCL is designed to brace unsupported sheathing edges when sheathing meets edge to edge without a rafter for support. This light sheathing clip provides a 1/8-in. gap to address shrinkage and expansion of roof sheathing. Inserted over the edges of adjacent plywood panels, the PSCL reduces deflection and keeps panels even to maintain a level plane on the structure. PSCL 20-Gauge Panel Sheathing Clip for 7/16-in. Plywood (250-Qty) (Pack of 25000).