Sargent 1256NB-8710G 84" Fire ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$6,349.20
$3,894.74
Sargent 1256NB-8710G 84-inch Fire Rated Surface Mount Vertical Rod Exit Device with Electric Latch Retraction, 32D Satin Stainless Steel finish, shown fully assembled with top and bottom rods

Sargent 1256NB-8710G 84" Fire Rated Surface Mount Vertical Rod Exit Device with Electric Latch Retraction

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Model: 1256NB-8710G 32D RHR
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$6,349.20
$3,894.74
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Sargent 1256NB-8710G 84" Fire Rated Surface Mount Vertical Rod Exit Device with Electric Latch Retraction

The Sargent 1256NB-8710G is a UL listed, fire rated surface mount vertical rod exit device built for 48" × 84" narrow stile doors. The 8710G electric latch retraction function integrates directly with access control systems — 24VDC operation, 600mA draw during retraction, 250mA maintained in the dogged position — enabling remote dogging and free-egress scheduling without mechanical dogging at the device. Finished in 32D satin stainless steel. Right Hand Reverse (RHR) handing.

Key Features

  • Electric Latch Retraction (ELR): 24VDC, 600mA retraction / 250mA maintained — integrates with access control panels, time-clock schedulers, and fire alarm systems.
  • Remote Dogging: Electrically holds the latch retracted; eliminates the need to manually dog the device at the door.
  • Fire Rated Construction: UL listed for fire-rated door assemblies; meets NFPA 80 and IBC egress requirements for exit device applications.
  • UL Class II Circuitry: Low-voltage wiring compliant with NEC Class II requirements — no conduit required in most jurisdictions.
  • Surface Mount Vertical Rod: Top and bottom rods engage the door frame at head and threshold; no mortise prep required in the door.
  • Narrow Stile Door Compatibility: Designed for 48" wide × 84" tall narrow stile aluminum or hollow metal doors.
  • Exit-Only / No Bottom Rod Option: No trim, exit-only configuration; no bottom rod simplifies installation on doors with threshold constraints.
  • 32D Satin Stainless Steel Finish: Corrosion-resistant finish suited for high-traffic and exterior vestibule applications.
  • Grade 1 Commercial Duty: Meets ANSI/BHMA A156.3 Grade 1 cycle and force requirements.

Technical Specifications

  • Model: 1256NB-8710G
  • Door Size: 48" width × 84" height
  • Stile Type: Narrow stile
  • Rod Configuration: Surface mount vertical rod (top rod only — no bottom rod)
  • Handing: Right Hand Reverse (RHR / Left Hand)
  • Voltage: 24VDC
  • Current Draw: 600mA (retraction) / 250mA (maintained/dogged)
  • Function: Electric latch retraction with remote dogging
  • Finish: 32D — Satin Stainless Steel
  • Fire Rating: UL listed
  • Electrical Listing: UL Class II circuitry
  • Grade: ANSI/BHMA Grade 1

Typical Applications

  • Stairwell and corridor fire doors in commercial office, healthcare, and education facilities
  • Access-controlled egress doors integrated with card readers or fire alarm release
  • Narrow stile aluminum storefront and curtainwall door assemblies
  • Government, institutional, and multi-family common-area exit doors requiring scheduled free-egress

Product Specs

Product Group:
Exit Devices and Trim
Product Subgroup:
Exit Devices - Mortise
Product Type:
Exit Device - Mortise
Subcategory:
Mortise Exit Devices
Commercial/Residential:
Commercial
Stile Type:
Narrow Stile
Grade:
Grade 1
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Sargent 1256NB-8710G 32D RHR – Frequently Asked Questions

1) Will the Sargent 1256NB-8710G fit a narrow stile aluminum storefront door?
Yes. The 1256NB-8710G is a narrow stile device, built for 48 inch wide by 84 inch tall doors in narrow stile aluminum storefront, curtainwall, or hollow metal construction. Because it is a surface mount vertical rod device, the rods run on the face of the door and no mortise pocket has to be cut into the stile, which is what makes it workable on a thin aluminum rail. If your opening is a wide stile wood or hollow metal door, this is the wrong device for it.
2) Do I have to specify handing on this Sargent vertical rod exit device?
Yes, handing is a required selection. The 1256NB-8710G is ordered either RHR (right hand reverse) or LHR (left hand reverse). It is not field reversible on your bench, so get the hand right off the drawing or off the existing door before you order. Stand outside the door: if it swings toward you and the hinges are on your right, that is right hand reverse.
3) What power supply do I need for the electric latch retraction on the Sargent 8710G?
Plan for 24VDC. The device pulls 600mA during the retraction stroke and holds at 250mA once it is latched back in the dogged position. Size the supply for the inrush of every device on the circuit, not the holding current, so a pair of doors running two of these needs 1.2A of retraction capacity at 24VDC. The wiring is UL Class II low voltage, so in most jurisdictions it does not have to be run in conduit.
4) Can I use this on a fire rated stairwell door?
Yes. The 1256NB-8710G is UL listed for fire rated door assemblies and the description ties it to NFPA 80 and IBC egress requirements. That is the reason it uses electric latch retraction instead of mechanical dogging: a fire door has to relatch, so the latch is held back by power and drops in the moment the circuit is released by the fire alarm.
5) Does this exit device come with lever trim or an outside pull?
No trim is included. The 1256NB-8710G is an exit only configuration, no outside trim, so entry from the pull side is handled by the access control side of the job (card reader releasing the latch retraction) rather than by a key or lever on the door. If you need a mechanical outside lever, look at a device built to accept trim, such as the Corbin Russwin ED5600AL, which is set up for passage or classroom lever trim (trim not included).
6) Is there a bottom rod on this device, and what does that mean at the threshold?
The 1256NB is a no bottom rod configuration, top rod only. That removes the bottom latch and strike at the floor, which is what you want where there is a threshold, a drain, carpet transition, or a sweep that would foul a bottom rod. It also kills the most common maintenance call on vertical rod devices, a bent or dragging bottom rod. Security at the bottom of the door is given up in exchange, so the top latch into the head frame is doing the work.
7) What is the closest narrow stile alternative to the Sargent 1256NB-8710G exit device?
For narrow stile openings, the Adams Rite 8400 Series is a narrow stile mortise exit device for aluminum doors, and the Von Duprin 5575-3ft is a narrow stile crossbar mortise lock exit device rated Grade 1 and field reversible. Both match the Sargent 1256NB-8710G on narrow stile fit and Grade 1 duty. The key difference is fire rating: the Sargent 1256NB-8710G is UL listed for fire rated door assemblies, while the Adams Rite 8400 and the Von Duprin 5575-3ft are both listed as non fire rated life safety devices. If the opening is a stairwell or corridor fire door, stay with the fire rated Sargent; if it is a non rated storefront or vestibule, either narrow stile peer suits the stile.
8) I need a fire rated mortise exit device but my doors are wide stile wood or hollow metal, not narrow stile aluminum. What should I use instead of the Sargent 1256NB-8710G?
The Sargent 1256NB-8710G is built for narrow stile doors, so a wide stile wood or hollow metal opening calls for a different device. The Adams Rite 3300 Series is a fire rated wide stile mortise exit device for wood and hollow metal doors, Grade 1. The Corbin Russwin ED5600AL is a Grade 1 three hour fire rated wide stile mortise exit device for 1-3/4 inch doors, available exit only or with classroom or passage lever trim ordered separately. Both carry the fire rating the Sargent carries, on the door construction you have.
9) Can I substitute a Von Duprin 9875 or 8875 for the Sargent 1256NB-8710G on a fire door?
No. The Von Duprin 9875-3FT and 8875-3FT are both Grade 1 wide stile mortise exit devices for 1-3/4 inch doors, and both are listed as non fire rated and not wood door compatible. The Sargent 1256NB-8710G is UL listed for fire rated door assemblies on narrow stile doors, so those two differ on both the fire rating and the stile. They are non handed crossbar and smooth case devices, which makes them useful for non rated wide stile openings, but not a drop-in for a rated narrow stile door.
10) Should I use a surface vertical rod device like this or a mortise exit device?
Surface vertical rod is what you use when you cannot cut a mortise pocket, which is the case on most narrow stile aluminum doors, and when you need a pair of doors to latch without a center mullion. The rods engage the frame at the head. A mortise exit device puts the lock body inside the door edge and latches into a jamb strike, which is cleaner looking and better on wide stile wood or hollow metal leaves. If your door is wide stile hollow metal, something like the Detex 30 Series Advantex or the Von Duprin 9875 is the mortise route; both are Grade 1 wide stile devices.
11) Is this Sargent device heavy duty enough for a main corridor or high traffic entry?
It meets ANSI/BHMA A156.3 Grade 1, which is the highest commercial duty class for exit devices and the level specified for high traffic and institutional openings. The 32D satin stainless finish holds up in exterior vestibules and wash-down prone entries better than a plated brass finish. Typical placements are stairwell and corridor fire doors in office, healthcare, and education buildings.
12) Can I put this on a schedule so the doors stay unlocked during business hours?
That is exactly what the remote dogging function is for. Rather than sending someone around with a dogging key each morning, the access control panel or time clock holds the latch electrically retracted for the scheduled period, drawing 250mA while it sits dogged. Tie it to the fire alarm relay and the latch drops back into the strike on alarm, which is what keeps a fire rated opening compliant while still allowing free push-pull access during the day.
13) If I do not need electric latch retraction, is there a simpler mortise exit device than the Sargent 1256NB-8710G?
Yes. The electric latch retraction and remote dogging on the Sargent 1256NB-8710G require a 24VDC supply and access control tie-in. If the opening only needs mechanical free egress, the Falcon 25-M-EO is a Grade 1 exit only wide stile mortise device for 1-3/4 inch doors in a 36 inch width, and the BEST Precision 2301 Series is an exit only mortise device with heavy wrought construction. Both are purely mechanical devices with no trim, so they suit exit only openings without a power run. Note both are wide stile, so confirm your stile before switching from the narrow stile Sargent.
14) The Sargent 1256NB-8710G requires handing at order. Which comparable mortise exit devices are non handed or field reversible?
The Sargent 1256NB-8710G is ordered by hand, Right Hand Reverse or Left Hand Reverse. Among the peers, the Von Duprin 5575-3ft is field reversible, and the Von Duprin 8875-3FT and 9875-3FT are non handed. That matters if you are stocking devices for a mixed fleet of openings rather than specifying a single door. Keep in mind those three are non fire rated, and the 8875 and 9875 are wide stile, so they solve the stocking question only on openings where the rating and stile match.
15) What finish does the Sargent 1256NB-8710G come in?
One finish, 32D satin stainless steel. If you are standardizing a building on satin stainless lever trim and pulls, this matches without a special order. There is no oil rubbed bronze or dark bronze option on this model, so on a bronze storefront package you will have a stainless device against bronze framing.
How fast can I get the Sargent 1256NB-8710G 32D RHR 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 1256NB-8710G 32D RHR come with a warranty?
Absolutely. The Sargent 1256NB-8710G 32D RHR 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 1256NB-8710G 32D RHR?
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