This fire rated counter door features 22-gauge primed galvanized steel and is ideal for applications where safety is as important as style. These NFPA-80 compliant doors are labeled with either a 3 hour UL Class A label for masonry applications, or a 1-1/2 hour UL Class B label for non-masonry fire walls (a 3 hour non-masonry UL label is available upon request). Oversize UL labels are available for certain applications. A host of standard and optional features further improve performance of these doors beyond the norm in fire-rated applications. This fire-rated counter door has exposed components made of primed galvanized steel.