CATEGORY B DOORS - ADDITIONAL EDGE SEALING SYSTEM REQUIRED
Stile and Rail Wood Panel Type (MDF Core) Fire Door for installation in Single Swing 20 Minute locations (without hose stream). For use in any "Category C - Standard Frame". The doors may also be installed in frames listed in "Category C - Proprietary Frames" in accordance with the door manufacturer's installation instructions.
LIMITATIONS
Cylindrical Latches with up to a 5" Backset / Cylindrical or Mortise Deadbolts / Mortise Latchsets / Surface Mounted Vertical Rod or Rim-Type Fire Exit Device / Surface Mounted Door Bottoms / Listed Viewers / Protection Plates / Plant-Ons.
MAXIMUM SIZES
Single Swing 3'0" wide x 8'0" high
Minimum Thickness 1-3/4" +/- 1/16"
Evaluated to the following...
This category includes doors evaluated with an edge-sealing system (Category G) field-applied to the labeled frame or door. The application of the edge-sealing system does not require any machining of the frame or door. Please refer to "Category G - Edge-Sealing System" for individual manufacturer's listings.
These assemblies are eligible for use in any "Category C - Standard" frame. These doors may also be installed in frames listed in "Category C - Proprietary" in the accordance with the frame manufacturer's individual listing.
All doors listed in Category B are eligible to bear the "S" (for Smoke & Draft Control assemblies) if a listed "Category H - Smoke & Draft Control Gasket" has been applied to the assembly. Please refer to Category H for individual gasket manufacturer's listings.
All doors in this category are identified by a label or marking bearing the wording, "Listed Fire Door", a time interval, a temperature rise rating, a serial number and the Warnock Hersey Certification Mark and "UBC-7-2-97/UL-10C". See Positive Pressure Section Header for more information.
