1/4" Thick & Heavier classed as plates.
Sheets ordered by gauge weight or thickness are subject to standard thickness and weight tolerances.
The Galvanized Sheet Gauge is based on the U.S. Standard Gauge.
Each Galvanized Sheet Gauge Number is 2.5 ounces per sq. ft. heavier or .0037 inch thicker than the weight or thickness of the corresponding U.S. Standard Gauge Number, regardless of coating weights.