WB FR-DW 820 Series

Standard Fire-Rated Access Door with Drywall Flange

Sizes & Specifications

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Williams Brothers - WB FR-DW 820 Series Standard Fire-Rated Access Door / Panel with Drywall Flange

Tape-in Flange Provides a Trimless Appearance to Eliminate Visual Distraction!

The WB FR-DW 800 Series Standard Fire-Rated Access Door with Drywall Flange is a durable, fire-rated flush access panel designed for wall and ceiling installation in applications where fire resistance and a concealed appearance is required. Featuring a heavy duty, 16 gauge steel frame with an insulated 20 gauge steel door and a white baked, paintable enamel finish, door is fire-rated for 1 1/2 hours in vertical installations and for 3 hours in horizontal installations. This fire rated access door with mud in flange features a perforated, tape-in flange allows for a trimless appearance to eliminate visual distraction.


  • Door: 20 Gauge Steel, 2 1/2″ Deep
  • Frame & Trim: 16 Gauge Steel, 1″ Wide Perforated, 24 Gauge Galvanized Drywall Flange
  • Finish: White Baked Enamel, Paintable Surface
  • Latches: Self-latching Slam Catch
  • Lock: Flush, Knurled Knob Lock with 1 Key
  • Hinges:  Fully-concealed, Pivot-rod Hinge (allows opening to 140°)
  • Insulation: 2″ Thick ROXUL Mineral Wool
  • Automatic Door Closer: Spring Closer for Vertical Position Only (ceiling position requires self-assisted closing)
  • Interior Latch Release: Allows Opening of Door from Inside
  • Fire Rating – Walls: UL Listed “B” Label for 1-1/2 Hours (vertical installation) – This Door May Be Used in a Two Hour Fire Rated Wall Assembly
  • Fire Rating – Ceilings: Warnock-Hersey Approved for Use in a 3 Hour Fire Rated Ceiling Assembly (horizontal installation) – Largest Size Acceptable is 24″ x 36″,  for Larger Than 24″ x 36″ See Model FR-C 800
  • Applications: Walls, Ceilings (depending on size)


  • Finishes: Stainless Steel, Custom Colors
  • Locks: WB Cylinder Lock (keyed alike with 2 keys per lock), Mortise Lock (with or without core)
  • Gasket: Hot Smoke Seal on All 4 Sides (fire and smoke tested)
  • Custom Sizes: Available on Request


The WB FR-DW 800 fire-rated access panel is available in a variety of sizes including 8×8, 12×12, 14×14, 16×16, 24×24 and more. In addition, custom sizes are available upon request. Door features a high-temperature, mineral wool insulation for optimal fire protection and superior sound control plus a concealed hinge and mud-in drywall flange. In addition, this self-closing and locking panel includes an automatic spring closer, knurled knob lock with a removable key and an interior release so it can be opened from the inside. Options include cylinder locks and hot smoke seal gaskets plus stainless steel construction and custom colors.

Manufactured for The Williams Brothers Corporation of America. MADE IN USA.