WB FRU 810 Ultra Series

Fire-Rated Access Doors with Key Lock

Sizes & Specifications

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Williams Brothers - WB FRU 810 Ultra Fire-Rated Access Door / Panel with Key Lock

Key Lockable Panel Offers Security, Fire Protection & Sound Control with Up to a 3 Hour Rating!

The WB FRU 810 Ultra Series Fire-Rated Access Door with Key Lock is a durable, fire-rated flush access panel designed for wall and ceiling installation in applications where fire resistance 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.


  • Door: 20 Gauge Steel, 2-1/2″ Deep
  • Frame & Trim: 16 Gauge Steel, 1″ Wide Flange
  • Finish: White Baked Enamel, Paintable Surface
  • Latches: Paddle Style
  • Locks: Paddle Latch Cylinder Lock (keyed alike with 2 keys per lock)
  • Hinges:  Continuous Piano Hinge (allows opening to 140°)
  • Insulation: 2″ Thick THERMAFIBER 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 48″
  • Applications: Walls, Ceilings (depending on size)


  • Finishes: Stainless Steel, Custom Colors
  • Gasket: Hot Smoke Seal on All 4 Sides (fire and smoke tested)
  • Custom Sizes: Available on Request


WB FRU 810 Ultra Features


The WB FRU 810 Ultra 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 an automatic spring closer, a semi-concealed hinge and an exposed flange. For added security door includes our specially designed Keyed Ultra Lock, self-latching keyed cylinder paddle latch with an interior release so it can be opened from the inside. Options include hot smoke seal gaskets plus stainless steel construction and custom colors.

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