Replace wood blocking on roof sheathing. Tight fit for positive installation. Embossed dimples provide 1/8 in gap needed to prevent panels from popping up as sheathing expands. G60 galvanizing finish. 20 ga, Boxed.
Provide structural support
Provide structural support
Reduce normal plywood deflection between panels
Embossed dimples/built-in spacer type feature provide APA recommended 1/8 in gap