The Adams Rite 8400 Series Life-Safety Narrow Stile Mortise Exit Device combines panic hardware with a mortise deadlatch locking solution for single narrow-stile aluminum door applications. It fits the standard door preparation used for the Adams Rite 4900 Heavy Duty Deadlatch, making it especially useful for new installations and compatible retrofit projects.
The extruded-aluminum push bar is available in multiple anodized or clad finishes. Standard device lengths accommodate 30", 36", 42" and 48" door openings, with supported devices field-cuttable to the next smaller opening width. The 8400 Series is certified to UL 305 for panic hardware and meets ANSI/BHMA A156.3 Grade 1 requirements. Adams Rite
Key Features
- Designed for single-door applications
- Mortise exit device for narrow-stile aluminum doors
- Fits narrow-, medium- and wide-stile aluminum doors
- Minimum 2" stile width
- Standard 1-3/4" door thickness
- Thick Door Kit and Thermal Door Kit available separately
- Fits the standard Adams Rite 4900 Heavy Duty Deadlatch cutout
- Available for 30", 36", 42" and 48" door openings
- Standard-width devices can be field cut to the next smaller supported opening width
- Specify handing and door bevel when ordering
- Standard hex-key dogging
- Optional cylinder dogging for non-fire-rated devices
- Motorized or solenoid-driven latch-retraction options
- Alarm and monitoring options available
- Standard stainless-steel strike included
- Solid-brass mortise deadlatch bolt
- UL 305 Panic Hardware
- ANSI/BHMA A156.3 Grade 1
Technical Specifications
| Specification | Details |
|---|---|
| Application | Single narrow-stile aluminum doors |
| Minimum stile width | 2" |
| Standard door thickness | 1-3/4" |
| Backsets | 31/32", 1-1/8" or 1-1/2" |
| Door-opening widths | 30", 36", 42" or 48" |
| Push-bar material | Extruded aluminum |
| Projection | 2-5/8" fully projected; 1-5/8" dogged |
| Standard dogging | Hex key |
| Optional dogging | Cylinder dogging on non-fire-rated devices |
| Deadlatch bolt | 5/8" × 1" with 5/8" throw |
| Bolt material | Solid brass |
| Standard strike | Stainless steel; included |
| Standard fasteners | Machine screws |
| Shipping weight | Approximately 11 lb. |
| Certification | UL 305 Panic Hardware |
| Performance standard | ANSI/BHMA A156.3 Grade 1 |
Specifications are based on Adams Rite’s current product page and dated catalog sheet. Adams Rite
Available Backsets
- 31/32"
- 1-1/8"
- 1-1/2"
Cylinder Requirements
When the selected function requires a cylinder, the device accepts a standard mortise cylinder with:
- 1-5/32" diameter
- MS cam
- Cylinder length from 1" through 1-1/4"
The Adams Rite 4036 Mortise Cylinder is a compatible option. Cylinders are ordered separately.
Function 03 – Night Latch
A key retracts or releases the latch. This function uses a compatible mortise cylinder with an MS cam. Function 03 is not applicable to the 8475 Mortise Mid-Panel Exit Device.
Entry Trim Functions
- Function 08: Key locks and unlocks the lever
- Function 09: Key releases the lever
These functions also require a compatible mortise cylinder with an MS cam. Adams Rite
Electrification and Monitoring Options
Depending on the ordered configuration, available options include:
- MLR: Motorized latch retraction
- LR: Solenoid-operated electric latch retraction
- Alarm
- Single- or dual-switch monitoring
- Request-to-exit monitoring or signal kits
- Cylinder dogging
- Matching end caps
Accuracy note: The current Adams Rite webpage still mentions electric dogging, but the newer catalog page dated July 31, 2025 states that electric dogging has been discontinued. Motorized and electric latch retraction are the manufacturer-recommended alternatives. Adams Rite
Compatible Accessories
Available separately:
- Adams Rite 3080 and 3080E Series entry trim
- Adams Rite 3090-150 keyless entry
- Adams Rite 4036 mortise cylinder
- 8460 extended-lip strikes
- 8455-01 long-face strike
- 4901 and 4902 deadlatch strikes
- Thick or cladded door kits
- Thermal Door Kit
- REX monitoring and signal kits
- PS-EXIT power supply
- 4612 power-transfer device
- 4603 rectifier
- 4605 transformer
- Compatible Adams Rite 7100 and 7400 Series electric strikes
Important Ordering Information
The 8400 Series is not a one-configuration-fits-all device. Confirm the following before ordering:
- Door-opening width
- Backset
- Door handing
- Door bevel or faceplate shape
- Door thickness
- Push-bar and faceplate finish
- Required exterior function or trim
- Cylinder requirements
- Latch-retraction, alarm or monitoring options
Frequently Asked Questions
What type of door is the Adams Rite 8400 designed for?
The 8400 Series is designed for single narrow-stile aluminum door applications requiring panic hardware with a mortise locking solution.
Is the Adams Rite 8400 a Grade 1 exit device?
Yes. The 8400 Series meets ANSI/BHMA A156.3 Grade 1 requirements and is UL 305 listed for panic hardware.
Is the 8400 Series fire rated?
Adams Rite identifies the 8400 Series as UL 305 panic hardware. Do not represent or order it as fire-exit hardware unless the specific configuration and opening are expressly documented and approved for that application.
What is the minimum aluminum-door stile width?
The minimum stile width is 2". The device fits narrow-, medium- and wide-stile aluminum doors.
What door thickness does it fit?
The standard configuration fits a 1-3/4" thick door. Separate kits are available for thicker or thermal doors.
What backsets are available?
The 8400 Series is offered with 31/32", 1-1/8" and 1-1/2" backsets.
What door widths are available?
Standard devices are sized for 30", 36", 42" and 48" door openings.
Can the Adams Rite 8400 be cut down?
Standard-width bars can be field cut to the next smaller supported opening width. Minimum permitted widths vary according to the backset and installed electrification or monitoring options, so consult the official cut-down matrix before cutting. content.assaabloyusa.com
Is the 8400 Series handed?
Yes. Handing and the applicable door bevel must be specified when ordering.
Does the exit device include a cylinder?
No. A required mortise cylinder is ordered separately. Adams Rite identifies the 4036 Mortise Cylinder with an MS cam as a compatible option.
Does it include a strike?
Yes. A standard stainless-steel strike is included. Extended-lip and long-face strikes are available separately.
What dogging is supplied?
Standard hex-key dogging is provided. Cylinder dogging is available as an option for non-fire-rated devices.
Is electric dogging available?
The latest Adams Rite catalog states that electric dogging has been discontinued. Motorized latch retraction and electric latch retraction are the available alternatives.
Does the 8400 Series offer latch retraction?
Yes. Motorized latch retraction and solenoid-operated electric latch retraction configurations are available.
Can the 8400 replace a 4900 deadlatch installation?
The available backsets fit the standard cutout used for the Adams Rite 4900 Heavy Duty Deadlatch. However, the complete door preparation and selected device configuration must still be verified before ordering.
Manufacturer Downloads
TITLE TAG: Adams Rite 8400 Narrow Stile Mortise Exit Device – Grade 1