Pressed Steel Fire Door Frames, Knockdown or Welded Up for Masonry or Drywall installation in 20 to 180 minute locations.
Test Standards: UL-10C (Positive Pressure); NFPA 252; CAN4 S104
Evaluated to the following:
This category includes frames based on ANSI-A155.1/UL-63 and includes sidelight/transom assemblies. These frames are qualified for use in positive pressure assemblies, with Category A doors, or with Category B doors utilizing Category G edge-sealing systems. These frames, when installed in pairs in drywall construction, shall have anchors installed in the head section, minimum 24" o.c. These listings will not reference specific door types, as all door types are eligible.
All frames in this category are identified by a label or marking bearing the wording, "Listed Fire Door Frame", and the Warnock Hersey Certification Mark. Frames rated at less than 3 hours will have a time interval noted on the label/marking. See Positive Pressure Section Header for more information