These steel lockers utilize Galvannealed steel and Powder Coat to resist corrosion. Galvannealed steel is cold rolled steel with a mill applied Zinc coating. If the top coat is damaged or penetrated by moisture, the Zinc coating protects the underlying steel from corrosion through galvanic action. The standard Powder Coat provides a durable coating and is not affected by common chemicals including Chlorine. It also provides dry film thicknesses in excess of 1.5 mils which prevents moisture penetration.