Fire labels (UL, ITS/WHI or FM) are located as follows:
Butt Hinges and Pivots:
On the doors the fire label is located on the hinge edge between the top and 2nd hinge preparation.
On the fram...
There are several door manufacturers that have achieved a 90 minute UL Fire listing as shown.
Von Duprin CVC with Marshfield Wood Door: Von Duprin is pleased to announce that Marshfield ...
The 6223-FSE electric strike is fire rated for pairs of wood doors, but check with wood door manufacturer to see if they have been approved for this application.