Williams Brothers Corporation of America
Building Products Listing Program
- Williams Brothers Corporation of America
- Fire Doors
- Front Royal, Virginia, USA
- F500-1
- F500-1, Edition 1
- March 31, 2025
- March 31, 2025
- N/A
-
Williams Brothers Fire-Resistance Rated Access Doors
-
The following outlines Williams Brothers Fire-Resistance Rated Access Door performance determined in accordance with the noted standards. The ratings outlined in the tables below are achieved in assemblies that are described.
Williams Brothers FR 800 Insulated Steel Vertical Access Door and Frame evaluated to CAN/ULC S104 and UL 10B:
Model Name
Fire-Resistance Rating
Maximum Size
Frame
Door
FR 800
(Vertical)
90-Minutes
48 in. x 48 in.
(1219 mm x 1219 mm)
16-Gauge Steel
2-5/8 in. (67 mm)
Depth Frame
18-Gauge Steel
2 in. (51 mm)
Depth Access Door
Williams Brothers FR 800 Insulated Steel Horizontal Access Door and Frame evaluated to CAN/ULC S101 and ASTM E119 for use in load-bearing fire resistance rated floor/ceiling assemblies:
Component
Description
Assembly
Type:
Wood joist, gypsum and plywood.
Fire-Resistance Rating:
60-Minutes
Access Door
Manufacturer:
Williams Brothers Corporation of America.
Model:
FR 800 (Horizontal).
Frame:
16-Gauge Steel
2-5/8 in. (67 mm) Depth.
Door:
18-Gauge Steel
2 in. (51 mm) Depth
Maximum Size:
36 in. x 36 in. (914 mm x 914 mm).
Framing
Type:
Nominal 2 in. x 8 in. (38 mm x 184 mm) dimensional wood joists, minimum specific gravity (SG) of 0.42, spaced 24 in. (610 mm) OC.
Gypsum Board
Type:
Type X gypsum board complying with ASTM C1396 and listed by a recognized agency.
Joints:
Joints in gypsum board to be taped and mudded in accordance with industry standards.
Ceiling
Type:
Two layers of 1/2 in. (12.5 mm) Type X gypsum board.
Fasteners:
Gypsum board is to be fastened to joists with #6 x 1-1/4 in. (32 mm) self-drilling drywall screws spaced at 8 in. (204 mm) on center.
Sub-Floor
Type:
One layer of 3/4 in. (20 mm) plywood attached in accordance with applicable code.
Opening
Type:
One layer of 5/8 in. (16 mm) Type X gypsum board around the perimeter of the opening.
Fasteners:
Gypsum Board fastened to wood framing with #6 x 1-1/4 in. (32 mm) self-drilling drywall screws spaced at 8 in. (204 mm) on center.
Installation
Description:
Inside edge of framing around the opening fully covered with 5/8 in. (16 mm) Type X gypsum board. The door frame is screwed into the wood stud framing of the wall through mounting holes using #10 x 2 in. (51 mm) wood screws.
Williams Brothers DW 405 Phantom Horizontal Access Door and Frame evaluated to CAN/ULC S101 and ASTM E119 for use in use in load-bearing fire resistance rated floor/ceiling assemblies:
Component
Description
Assembly Type
Type:
Steel joist, gypsum board ceiling and plywood flooring.
Fire-Resistance Rating:
45-Minutes.
Access Door
Manufacturer:
Williams Brothers Corporation of America.
Model:
DW 405 Phantom (Horizontal).
Frame:
Type X gypsum.
Door:
Type X gypsum.
Maximum Size:
22 in. x 30 in. (559 mm x 762 mm)
Framing
Type:
3-5/8 in. x 1-1/4 in. (92 mm x 32 mm) steel joist support framing for the door and gypsum board spaced 24 in. (610 mm) OC.
Gypsum Board
Type:
Type X gypsum board complying with ASTM C1396 and listed by a recognized agency.
Joints:
Joints in gypsum board to be taped/mudded in accordance with industry standards
Ceiling
Type:
One layer of 5/8 in. (16 mm) Type X gypsum board.
Fasteners:
Gypsum board is to be fastened to joists with #6 x 1-1/4 in. (32 mm) self-drilling drywall screws spaced at 8 in. (204 mm) on center.
Sub-Floor
Type:
One layer of 3/4 in. (20 mm) plywood attached in accordance with applicable code.
Installation
Description:
Frame mounted to the steel framing with #6 x 1-1/4 in. (32 mm) self-drilling drywall screws spaced every 3 in. (76 mm). The door is manually placed on the frame edges to ensure uniform bearing coverage with no gaps between the door and frame into the floor / ceiling cavity space
Notes:
•Refer to QAI evaluation reports F500 and the applicable test reports for test assembly configurations used for fire endurance testing.
•Refer to the QAI FD002 – Fire Door Guidelines for general guidelines of fire door assemblies
•Final acceptance of the product in the intended application is to be determined by the authority having jurisdiction (AHJ).
•Product is to be installed in accordance with the manufacturer’s published installation instructions by qualified personnel.
The materials, products or systems listed in this directory have been qualified to bear the QAI Listing Mark under the conditions stated with each Listing. Only those products bearing the QAI Listing Mark are considered to be listed by QAI.
The standard herein listed is the currently accepted version within the relevant certification scheme, code or other requirements unless otherwise noted. Transition periods may apply. Upon request, QAI will provide information about the validity of any of its certifications.
No warrantee is expressed or implied, and no guarantee is provided that any jurisdictional authority will accept the Listing found herein. The appropriate authorities should be contacted regarding the acceptability of any given Listing.
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