Category B Doors - Additional Edge-Sealing System Required
Particleboard Core, Fiberglass Skin, Swinging flush door for installation in up to 20 minute locations with hose stream. For use in listed (3-sided) 16-gauge welded steel frames meeting UL 63 or as per frame manufacturer’s listing(s). Field-Applied Edge-Seal System specifically for Fiberglass or CAT A concealed edge system is required. CAT A edges can be used with HPL or wood veneer edge banding upto 0.090" thick or per Intumescents requirements. Refer to the door manufacturer’s installation instructions for Edge-Seal System requirements.
| Configuration |
Maximum Size |
| Single Swing |
4'0" x 8'0" |
Standard Pair
(3-point or 4-point latching)
|
8'0" x 8'0" |
Limitations*
Mortise or Cylindrical Latches with maximum 5” backset/Surface-Mounted Vertical Rod Fire Exit Devices/Rim-Type Fire Exit Devices/Deadbolts/Surface Bolts/Mortised Flushbolts/Surface-Mounted Closers/Surface-Mounted Protection Plates/Viewer/Vision Lite Kit-Maximum 704 sq. in. using Firelite with MVP, 3/8" Electrical Raceways/ Surface-Mounted Door Bottoms/Edge Guards.
* See manufacturer’s installation instructions for additional information on Smoke and Draft Control, size restrictions, and limitations.
Testing Standards
UL-10C (Positive Pressure)/NFPA 252/CAN/ULC S104.
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".
