Regarding an existing fire door assembly - the door has a fire label but the frame does not. Is the frame required to have a label?
An architect is interested in specifying a sliding fire door assembly for a project, but I see that the product is listed to UL 10B. I thought fire doors were required to be listed to UL 10C?
If a door closer on a fire door is missing the cover, is that a deficiency that should be noted on a fire door inspection report?