FD2D 2-Hour Fire-Rated Access Panel Double Door

The FD2D is a 2-hour fire-rated access panel with double doors and a removable center mullion. It installs in walls and ceilings and is built for applications where a single door would create an excessively wide swing radius or obstruct access.

The double-leaf design splits the opening across two doors, so each door sweeps a shorter arc and clears objects that a single door would hit. The removable center mullion opens the full width when you need unobstructed access.

Intertek Warnock Hersey lists and labels the FD2D for a 2-hour fire rating in both vertical and horizontal installations. As a result, the panel covers both wall and ceiling applications without requiring separate fire-rated products for each assembly.

Why Do Contractors Specify FD2D 2-Hour Fire-Rated Access Panel Double Door?

• Wall and ceiling installation: Rated for both vertical and horizontal installation under a single Intertek Warnock Hersey listing.
• Double-door access in tight spaces: Two doors keep each swing radius short, so the panel works where a single large door would swing into equipment or obstruct access.
• Removable center mullion: Pull the mullion out for full, unobstructed access to the opening.
• Automatic panel closer: The closer shuts and latches each door from approximately 90° open, meeting NFPA 80 requirements without any manual intervention.
• Self-latching fire-rated locks: All fire-rated lock options are self-latching and include an interior latch release, so the doors can always be opened from the inside.

Ready to order? Request a quote for the FD2D to confirm your size, material, latch configuration, and production lead time for your project.

Key Product Specifications

• Fire rating: 2-hour, Intertek Warnock Hersey Listed and Labeled
• Installation: Walls and ceilings (vertical and horizontal)
• Testing standards: Vertical — NFPA 252, UL 10B, CAN/ULC S104; Horizontal — UBC 43-7, CAN/ULC S112
• Temp rise: 139°C / 250°F at 30 min; 250°C / 450°F at 60 min
• Frame: 16 ga. (up to and including 30" x 48"); 14 ga. (larger sizes); removable center mullion; frame depth 2-1/4" (57 mm)
• Flange: 7/8" (22 mm) up to and including 36" x 36"; 1-1/4" (32 mm) for larger sizes
• Door panel: 18 ga. with 22 ga. liner; 1-1/2" high-temperature insulation
• Hinge: Concealed continuous rod hinge (standard); continuous piano hinge for 48" or longer in wall position; stainless steel continuous piano hinge on stainless models
• Materials: Satin finish galvannealed steel or 304 stainless steel
• Finish: Rust-inhibitive off-white prime coat (standard) or #4 polished stainless steel finish
• Panel closer: Automatic; closes and latches from approximately 90° open per NFPA 80
• Standard latch: Flush mount 1/4" Allen key
• Latches per door: 2 latches (smaller sizes) or 4 latches (larger sizes), depending on door dimensions
• Net opening: Width minus 6" (153 mm); height minus 1-1/2" (39 mm)
• Size range: Minimum 18" x 12"; maximum 48" x 60" for walls; maximum 60" x 48" for ceilings

What Comes Standard and What Can Be Configured?

Every FD2D ships with the following as standard:

• Galvannealed steel construction with satin finish
• 16 ga. frame (up to 30" x 48") or 14 ga. frame (larger sizes)
• Removable center mullion
• 1-1/2" high-temperature insulation in door panel
• Concealed continuous rod hinge (piano hinge on 48"+ wall installations)
• Automatic panel closer (NFPA 80 compliant)
• Flush mount 1/4" Allen key latch (self-latching with interior release)

The following options must be specified at the time of order and are not included in standard pricing:

• Raised knurled knob
• 1-1/8" mortise prep
• 1-1/8" mortise prep with cylinder
• 304 stainless steel construction with #4 polished finish

What Should You Confirm Before Ordering FD2D?

• Size: Confirm your required door size against the available range. Minimum 18" x 12", maximum 48" x 60" for walls; maximum 60"x 48" for ceilings. Net opening will be width minus 6" and height minus 1-1/2".
• Installation surface: Confirm whether the panel installs in a wall or ceiling. Both are rated, but hinge configuration depends on orientation and size.
• Material: Specify galvannealed steel or stainless steel at the time of order. Stainless models use a stainless piano hinge and #4 polished finish.
• Latch or lock option: The FD2D ships with the standard 1/4" Allen key latch. If you need a knurled knob, mortise prep, or cylinder lock, specify this before ordering. Lock upgrades come at an additional cost.
• Number of latches: Smaller sizes use 2 latches; larger sizes use 4. Confirm which configuration applies to your door dimensions.
• Fire rating compliance: Confirm the FD2D's 2-hour rating meets your project's assembly requirements. The Intertek Warnock Hersey listing covers vertical (NFPA 252, UL 10B, CAN/ULC S104) and horizontal (UBC 43-7, CAN/ULC S112) installations.
• Production lead time: Request a quote to confirm production and ship dates for your configuration.

Installation Notes

• Sizes 48" or longer in wall position receive a continuous piano hinge instead of the concealed rod hinge.
• Net opening dimensions are smaller than the order size: subtract 6" from the width and 1-1/2" from the height.
• Lining of the stud is not required for up to a 1-hour application.
• The automatic panel closer brings each door to the closed and latched position from approximately 90° open, as required by NFPA 80.

Who Specifies FD2D and Where Is It Used?

Contractors, facility managers, and building owners specify the FD2D where a single-door panel would create an impractical swing radius or where the full opening width needs to be cleared for access.

Common applications include:

• Mechanical and electrical rooms: Large equipment access points in commercial and industrial facilities where full-width clearance is required.
• High-traffic institutional buildings: Fire-rated access in schools, hospitals, and government buildings where the automatic closer keeps doors latched without manual intervention.
• Ceilings in commercial spaces: The FD2D's horizontal fire rating covers plenum and ceiling installations in offices, retail, and hospitality.
• Renovation projects: Installations where a removable center mullion allows equipment to be brought through the full opening width without removing the frame.

Not sure the FD2D is the right fit? Browse our fire-rated access doors to compare single-door, double-door, and ceiling-rated options side by side.

Frequently Asked Questions

1. What is the net opening of FD2D?
The net opening is the order size minus 6" on the width and minus 1-1/2" on the height. So, a 48" x 48" door gives you a net opening of 42" wide by 46-1/2" long.

2. Can FD2D be installed on a ceiling?
Yes. The FD2D is rated for both vertical (wall) and horizontal (ceiling) installation. The Intertek Warnock Hersey listing covers horizontal installation in accordance with UBC 43-7 and CAN/ULC S112.

3. What latch comes standard on FD2D?
The standard latch is a flush mount 1/4" Allen key. Optional upgrades include a raised knurled knob, 1-1/8" mortise prep, and 1-1/8" mortise prep with cylinder. Lock upgrades come at an additional cost and must be specified at the time of order.

4. Does FD2D have an automatic closer?
Yes. The automatic panel closer shuts and latches each door from approximately 90° open. This meets NFPA 80 requirements for fire-rated door assemblies.

5. Are the locks on FD2D self-latching?
Yes. All fire-rated locks on the FD2D are self-latching and include an interior latch release mechanism, so the doors can always be opened from the inside.

Why Buy FD2D From Access Doors and Panels?

Access Doors and Panels stocks and builds access panels to your specifications. We confirm your size, material, latch configuration, and production lead time before you place an order. If your project needs a size outside the standard range, custom sizes are available fast.

Have any questions? Contact our team or call +1-888-327-5471 to confirm specifications, compare latch options, and get sizing guidance.

Need a custom size? Request a custom quote to get the FD2D manufactured to your exact dimensions.