How to identify a fire-rated door?

It is very easy to identify a fire-rated door. You have to look for the identifying label on the corner of the door. The label should show information related to the door’s certification, minutes of fire resistance, dimensions, quality mark, etc.

Asturmadi steel fire rated doors are marked with laser labels that show the type of certification, the laboratory that certifies it, minutes of fire resistance, dimensions, opening side, and QR code. Find the label on the hinge side corner of the leaf.