Sargent AD8440 Narrow Stile Co...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4,188.11
$2,804.45
Sargent AD8400 Series - (AD8440) Exit Only/Dummy (Lever rotates) Function Narrow Stile Concealed Vertical Rod

Sargent AD8440 Narrow Stile Concealed Vertical Rod Exit Device with Exit Only Function

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Model: AD8440E 10BE
From the AD8400 Series Collection
$4,188.11
$2,804.45
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$4,188.11
$2,804.45
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Sargent AD8440 Narrow Stile Concealed Vertical Rod Exit Device with Exit Only Function

Professional Narrow Stile Exit Device Solution

The Sargent AD8440 is a specialized concealed vertical rod exit device engineered for narrow stile applications with exit only/dummy function where the lever rotates. This UL Fire and Panic listed device accommodates doors with 1-3/4" minimum thickness and requires only 1-3/4" minimum stile width with hollow construction. The device features factory-cut rails sized by door width, with E Rail for 24" to 32" doors, F Rail for 33" to 36" doors, J Rail for 37" to 42" doors, and G Rail for 43" to 48" doors.

Professional Features & Benefits

  • Narrow Stile Compatibility: Designed for 1-3/4" minimum stile width with hollow construction requiring only 1-3/8" square inside dimension for versatile installation options.
  • Door Thickness Range: Accommodates hollow metal doors from 1-3/4" to 2-1/4" thick for broad application compatibility.
  • Factory-Sized Rails: Rails available in four sizes (E, F, J, G) factory cut to accommodate door widths from 24" to 48" for precise fit and optimal performance.
  • UL Fire and Panic Listed: Certified for fire-rated applications with 650 Top Strike and 606 Bottom Strike for code compliance and safety assurance.
  • Stainless Steel Construction: Durable stainless steel top bolt provides long-term reliability and corrosion resistance in demanding environments.
  • Flexible Dogging Options: Standard hex key dogging on non-fire rated devices with optional cylinder dogging available for enhanced security control.
  • Comprehensive Electric Integration: Compatible with alarm, beacon, photoluminescent coating, illuminated touchpad, monitoring, and delayed egress systems for complete access control solutions.
  • Precise Device Positioning: Standard 41" centerline from finished floor with 38" option for elementary schools and accessibility compliance applications.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Sargent Quality?

Sargent exit devices deliver professional-grade reliability with UL Fire and Panic listing and stainless steel construction for demanding commercial applications. The AD8400 Series combines narrow stile versatility with comprehensive electric options and precise factory sizing for dependable performance where space constraints and code compliance are essential.

Product Specs

Series:
AD8400 Series
Product Group:
Exit Devices and Trim
Product Subgroup:
Exit Devices - Mortise
Product Type:
Exit Devices - Mortise
Subcategory:
Mortise Exit Devices
Commercial/Residential:
Commercial
Stile Type:
Narrow Stile
Lock Function:
Dummy
Grade:
Grade 1
Model Series:
AD8400 Series
Product Model:
AD8440
Product Function:
Dummy
Product Category:
Exit Devices and Trim
Collection:
AD8400 Series
Department:
Door Hardware

Sargent AD8440E 10BE – Frequently Asked Questions

1) Will the Sargent AD8440 fit a narrow stile aluminum-style door?
The AD8440 needs a stile of at least 1-3/4 inches with hollow construction, and the inside of that stile has to give you a 1-3/8 inch square clear dimension for the concealed rod to run. If your stile is narrower than 1-3/4 inches, or it is solid rather than hollow, the device will not go on. Door thickness has to fall between 1-3/4 and 2-1/4 inches on hollow metal doors.
2) What does the exit only / dummy function on the Sargent AD8440 actually do?
Exit only means there is no outside key or lever operation that retracts the latches. You push the touchpad to get out, and the outside stays secure. With the dummy ET trim fitted, the lever rotates but does nothing mechanically, it is there so the opening matches the levers on the rest of your doors. If you need the outside lever to unlatch the door, this is the wrong function in the AD8400 family.
3) How do I pick the right rail size for my door width on the AD8440?
Rails are factory cut, so you order by door width: E Rail covers 24 to 32 inch doors, F Rail 33 to 36 inches, J Rail 37 to 42 inches, and G Rail 43 to 48 inches. The ordering sizes offered are 32, 36, 42 and 48 inches, which line up with those four rail cuts. Measure the actual door leaf, not the frame opening, before you pick.
4) Do I have to specify handing on the Sargent AD8440?
Yes, handing is required at the time of order and there are two choices, RHR (right hand reverse) and LHR (left hand reverse). Exit devices sit on the push side, so both options are reverse bevel. Stand outside the opening: if the door swings toward you and the hinges are on your right, it is RHR.
5) Can the AD8440 be used on a fire rated opening?
The AD8440 is UL Fire and Panic listed, used with a 650 top strike and a 606 bottom strike. One thing to plan around: hex key dogging is standard on non-fire rated devices only. Fire rated openings cannot have the latches held retracted mechanically, so if you want the door to stay push-open during the day on a fire door, you need an electric option rather than dogging.
6) My door is a standard wide stile hollow metal leaf, not narrow stile. What mortise exit device should I use instead of the AD8440?
The AD8440 is built for narrow stile construction with a 1-3/4 inch minimum stile width, so on a wide stile leaf you are paying for a constraint you do not have. Wide stile Grade 1 mortise devices include the Von Duprin 9875-3FT smooth case, the Von Duprin 8875-3FT crossbar, and the Falcon 25-M-EO in a 36 inch exit only configuration at 1-3/4 inch door thickness. If the wide stile opening is fire labeled, the Corbin Russwin ED5600AL is a Grade 1 three hour fire rated wide stile mortise device, and the Adams Rite 3300 Series is a fire rated Grade 1 wide stile mortise device for wood and hollow metal doors.
7) What is the closest narrow stile mortise exit device alternative to the Sargent AD8440?
For a narrow stile opening, the Von Duprin 5575-3ft is the nearest peer. It is a Grade 1 narrow stile mortise lock exit device rated for 1-3/4 inch door thickness and is field reversible, where the AD8440 is ordered as RHR or LHR narrow stile. The 5575 uses a crossbar actuator rather than the AD8440's rail, and it is not fire rated, so on a labeled opening the AD8440, which is UL Fire and Panic listed, stays in the spec. The Adams Rite 8400 Series is the other narrow stile option, a Grade 1 narrow stile mortise exit device for aluminum doors, also non fire rated.
8) I need an exit only device with no outside trim at all. Is the AD8440 the right choice or is there a simpler option?
The AD8440 is an exit only/dummy function device and can be ordered with no trim, but it is a concealed vertical rod device, which means the door and frame have to be prepped for top and bottom strikes. If you do not need vertical rod latching, simpler exit only mortise devices include the BEST Precision 2301 Series, an exit only mortise device with heavy wrought construction, the Detex 30 Series Grade 1 device in its exit only configuration, and the Falcon 25-M-EO at 36 inches. Those are wide stile devices, so they only apply if your stile width allows.
9) What is the difference between the Sargent AD8440 lever trim and a device that takes classroom lever trim like the Corbin Russwin ED5600AL?
The AD8440 is a dummy function device: the ET lever rotates but does not retract a latch, and it ships with lever choices from A through W or with no trim at all. The Corbin Russwin ED5600AL is a Grade 1 wide stile mortise device built to accept passage or classroom lever trim, which is sold separately, so outside entry by key or by free lever is possible. If you need outside access through the lever, the AD8440 dummy function will not provide it.
10) What mounting height should the AD8440 touchpad be set at?
Standard centerline is 41 inches from finished floor. A 38 inch centerline is offered where you need the pad lower, which is the usual call for elementary schools and accessibility driven specs. Pick one height and hold it across a building so the openings look and operate the same.
11) Why choose a concealed vertical rod exit device instead of a rim device?
Concealed vertical rod latches at the head and the threshold with the rods buried inside the door, so you get a clean face and you can secure a pair of doors without a center mullion. A rim device latches into a strike on the frame or a mullion, which is simpler to install and service but leaves hardware on the surface and needs that mullion on a pair. CVR also requires a hollow stile with the clear 1-3/8 inch square inside it, so it is not a retrofit you can force onto a solid stile.
12) Does the Sargent AD8440 come with trim, or do I order that separately?
Trim is a choice you make on the order. You can take the device on its own (Exit Device Only) or add ET trim with an A, B, E, F, J, L, P or W lever. Because the function is dummy, that lever rotates but will not retract the latches. Pick the lever style that matches the other levers in the building.
13) Is the Sargent AD8440 rated for high traffic commercial use?
It is a Grade 1 commercial device, the top ANSI/BHMA durability tier for exit hardware, with a stainless steel top bolt for corrosion resistance. That is the grade specified for schools, hospitals, and other high-cycle openings.
14) Crossbar or push rail: how does the AD8440 compare to the Von Duprin 55 and 88 Series?
The AD8440 uses a factory cut push rail sized to the door leaf, E rail for 24 to 32 inch, F for 33 to 36 inch, J for 37 to 42 inch, and G for 43 to 48 inch, ordered in 32, 36, 42, or 48 inch sizes. The Von Duprin 5575-3ft is a narrow stile crossbar device and the 8875-3FT is a wide stile crossbar device, both Grade 1 at 1-3/4 inch door thickness. The Von Duprin 9875-3FT is a smooth case wide stile push rail device, and the 9475/9575 Impact Series uses a recessed push pad for wide stile doors. Crossbar devices present a horizontal bar across the door face; rail and push pad devices present a flush actuator.
15) For a high abuse opening like a school gym or loading area, is there an alternative to the AD8440?
The Von Duprin 9475/9575 Impact Series is a Grade 1 wide stile mortise lock exit device with a recessed push pad, which keeps the actuator out of the path of carts and equipment; it is non fire rated. The BEST Precision 2301 Series is an exit only mortise device with heavy wrought construction. Both are wide stile, so they need a wider stile than the AD8440's 1-3/4 inch minimum. The AD8440 answers the same environments with stainless steel top bolt construction and a 38 inch centerline option for elementary schools alongside the standard 41 inch.
16) Do any of the alternatives to the AD8440 support electric options like delayed egress or latch monitoring?
The AD8440 is the one in this group with electric options called out by code: AL alarmed for 36 inch minimum door width, 53 latchbolt monitor switch, 54 internal micro switch in ET control, 55 signal switch in rail, 56 remote dogging and latch retraction, 58 electric dogging, and 59 Electroguard, along with delayed egress, beacon, photoluminescent coating, and illuminated touchpad compatibility. If you are standardizing an access controlled narrow stile opening, the AD8440 carries that integration; peers such as the Adams Rite 8400 Series and Von Duprin 5575-3ft are specified here as Grade 1 narrow stile mechanical devices.
17) Is the Adams Rite 8300 a substitute for the Sargent AD8440?
Not on the same opening. The Adams Rite 8300 Series is a Grade 1 wide stile life safety mortise exit device for wood and hollow metal doors and is non fire rated. The AD8440 is a Grade 1 narrow stile concealed vertical rod device that is UL Fire and Panic listed. The two differ on stile width, on fire listing, and on latching method, so the 8300 fits a non labeled wide stile wood or hollow metal leaf rather than a narrow stile one.
18) Can I match the AD8440 to the finishes on the rest of my openings?
Twelve finishes are offered: bright and satin brass clear coated (03, 04), bright and satin bronze clear coated (09, 10), three dark oxidized satin bronze variations (10B oil rubbed, 10BE, 10BL clear coated), dark statuary bronze lacquered (20D), bright and satin stainless (32, 32D), plus black and white suede powder coat (BSP, WSP). 32D satin stainless is the usual pick for commercial corridors.
How fast can I get the Sargent AD8440E 10BE delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Sargent AD8440E 10BE come with a warranty?
Absolutely. The Sargent AD8440E 10BE is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Sargent AD8440E 10BE?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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