CATEGORY B - DOORS - ADDITIONAL EDGE-SEALING SYSTEM REQUIRED
Wood Core Type (Particleboard, Stave Core), Swinging Flush Door for installation in up to 20 minute locations. For use in any "Category C - Standard" frame. These doors may also be installed in frames listed in "Category C- Proprietary" in accordance with the frame manufacturer's individual listing. A field-applied edge seal system is required. Refer to the individual manufacturer's Category G listing for limitations.
Limitations*
Mortise or Cylindrical Latches with maximum 5" backset/Card Reader/Mortised Exit Devices/Surface Mounted Vertical Rod Fire Exit Devices/Concealed Vertical Rod-Cable Fire Exit Devices/Rim-Type Fire Exit Devices/Deadbolts/Surface Bolts/Automatic Flush Bolts/Surface-Mounted or Concealed Closers/Surface-Mounted Protection Plates/Plant-Ons/Viewer/Electric Raceway/Vision Light Kit - Maximum 1,296 in2/Simulated Panels - Maximum 2,774 in2/Transoms/Surface-Mounted or Mortised Door Bottoms/Astragal Required/Electric Power Transfer (EPT)/Concealed-Invisible Hinges.
Maximum Size of Openings
Single Swing 4'0" wide x 10'0" high
Standard Pairs 8'0" wide x 9'0" high
Double Egress Pairs 8'0" wide x 9'0" high
*See manufacturer's installation instructions for additional information on Smoke and Draft Control, size restrictions and limitations
Testing Standards: UL-10C (Positive Pressure).
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 "UL 10C".
Note: Category "A" Doors do not require any intumescent concealed within the hinge and latch stile and the top of the door when the door does not exceed 4'-0" wide by 9'-0" tall in size for single swing application only and when the door is installed in a listed and labeled hollow metal frame installed in a masonry wall with the cavities of the frame fully grouted.
