FC-20 Category "B" Fire Rated Door (Additional edge sealing required)
FC-20 Fire Door with 20 Minute Flush or Panel Type Proprietary Core. Flush or Panel type fire door for installation in single swing or pair of doors for 20 minute locations. For use in any Category "C" standard frame.
Limitations
Cylindrical or mortise locks, minimum 1/2" bolt throw, cylindrical deadlock, surface mount or mortised automatic door bottoms, surface mount fire exit hardware, concealed vertical rod fire exit hardware, wire raceway, surface mount or mortise flush bolts, surface mount or mortised closers, plant-ons, astragal optional, face grooves / reveals (flush doors only) 180 degree radius top is allowed.
Maximum Size of Openings
Singles 4'0" wide x 8'0" high
Pairs 7'0" wide x 8'0" high
Evaluated to the following...
Category B - Fire Doors (Additional Edge Sealing Required)
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.
Meeting edges of pairs may require an astragal or an edge-sealing system. Please refer to individual door listings.
These doors 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 10(c)".
