This fire labeling standard is set by Warnock Hershey International, among other testing laboratories.

It certifies that the maximum temperature rise (above ambient) developed on the unexposed face of the door at the 30 minute point of a Standard Fire Test, does not exceed 250 degrees F.

Stainless Doors, Inc. engineers the door core construction to meet these stringent standards for performance.

Used primarily at stairwell enclosures, our doors provide peace of mind for an added measure of building safety.