What is the width of the 6 ft. Corrugated Galvanized Steel 29-Gauge Roof Panel?

Each panel is 25 3/4 inches wide.

Each panel is 25 3/4 inches wide. When installing for a roofing application, it is recommended to overlap 2 corrugations giving you 21-1/2" coverage, if used in a siding application you only have to overlap 1 corrugation giving you 24" coverage.