Sargent NB8773 Fail Safe Elect...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,607.89
$2,438.93
Sargent NB8700 Series - (NB8773) Fail Safe Electrified Function Wide Stile Grade 1 Surface Vertical Rod Exit Device

Sargent NB8773 Fail Safe Electrified Wide Stile Surface Vertical Rod Exit Device

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Model: NB8773E 10BE
From the NB8700 Series Collection
$3,607.89
$2,438.93
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$3,607.89
$2,438.93
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Sargent NB8773 Fail Safe Electrified Wide Stile Surface Vertical Rod Exit Device with Grade 1 Construction

Professional Grade 1 Exit Device Solution

The Sargent NB8773 delivers professional-grade exit device performance with fail safe electrified functionality for wide stile applications. This top latch surface vertical rod exit device accommodates doors from 1-3/4" to 2-1/4" thick with 4-1/2" minimum stile width with trim and 3-1/2" minimum stile without trim. Available in multiple rail configurations for door widths from 24" to 48" including E Rail (24" to 32"), F Rail (33" to 36"), J Rail (37" to 42"), and G Rail (43" to 48") with no cutting required for standard door sizes.

Professional Features & Benefits

  • Wide Door Width Compatibility: Multiple rail options accommodate doors from 24" to 48" with no cutting required for standard 32", 36", 42", and 48" door widths.
  • Flexible Door Thickness Range: Designed for wood or metal doors from 1-3/4" to 2-1/4" thick for versatile installation options.
  • Wide Stile Configuration: Accommodates 4-1/2" minimum stile with trim and 3-1/2" minimum stile without trim for various door construction types.
  • Fail Safe Electrified Operation: Electrified function provides secure access control with fail safe operation for emergency egress compliance.
  • Grade 1 Construction: Professional-grade durability and performance rating for demanding commercial applications.
  • Top Latch Design: Surface vertical rod configuration provides reliable latching with simplified installation requirements.
  • Rated and Non-Rated Applications: Suitable for both fire-rated and standard openings to meet various building code requirements.
  • Comprehensive Rail System: E Rail (24" to 32"), F Rail (33" to 36"), J Rail (37" to 42"), and G Rail (43" to 48") configurations provide precise fit without field modifications.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Verify electrical requirements match available power supply and confirm current capacity before proceeding with electrified installation.
  2. Disconnect power supply before beginning installation. Follow all applicable electrical codes and safety procedures.
  3. Mount the unit in the specified location ensuring adequate clearance for wiring access, ventilation, and future service requirements.
  4. Route and connect wiring according to manufacturer wiring diagrams. Use appropriate wire gauge and connectors for the application.
  5. Configure operational settings including fail safe operation per application requirements.
  6. Restore power and test all functions including normal operation, electrified functions, and integration with connected access control systems.
  7. Complete final inspection and document settings. Refer to manufacturer documentation for complete wiring diagrams, programming instructions, 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 NB8700 Series exit devices deliver professional-grade reliability with Grade 1 construction and comprehensive rail configurations for doors from 24" to 48" wide. The series provides the optimal combination of simplicity, strength, durability, aesthetics and innovation for both rated and non-rated openings. Engineered for demanding commercial applications where dependable performance and code compliance are essential.

Product Specs

Series:
NB8700 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:
Wide Stile
Lock Function:
Electrified
Grade:
Grade 1
Model Series:
NB8700 Series
Product Model:
NB8773
Product Function:
Electrified
Product Category:
Exit Devices and Trim
Collection:
NB8700 Series
Department:
Door Hardware

Sargent NB8773E 10BE – Frequently Asked Questions

1) Will the Sargent NB8773 exit device fit a 2-inch thick wood door?
Yes. The NB8773 is built for wood or metal doors from 1-3/4 inches to 2-1/4 inches thick, so a 2-inch wood door is inside the range. Stile width is the other check: you need at least 4-1/2 inches of stile if you are mounting ET lever trim, or 3-1/2 inches if you order the device exit-only with no trim.
2) Which rail length do I order for a 42-inch door on the Sargent NB8700 Series?
A 42-inch door takes the J Rail, which covers 37 to 42 inches. The other rails are E Rail for 24 to 32 inches, F Rail for 33 to 36 inches, and G Rail for 43 to 48 inches. Sizes are ordered as 32, 36, 42 and 48 inches, and no cutting is needed at those standard door widths.
3) What does fail safe mean on the Sargent NB8773, and what happens in a power failure?
Fail safe means the electrified trim unlocks when power is removed. Drop power, whether from a fire alarm signal, an access control release or an outage, and the outside lever gives access. Free egress from the inside is always available through the push rail regardless of power. If you need the outside lever to stay locked when power drops, fail safe is the wrong function for that opening.
4) Do I have to specify handing on the Sargent NB8773?
Yes, handing is a required choice, RHR (right hand reverse) or LHR (left hand reverse). Exit devices are always reverse bevel because they swing out in the direction of egress. Stand outside the door: if the hinges are on your right and the door pulls toward you, it is RHR. Getting this wrong on an electrified device means a return, since the unit is built handed.
5) Can I use the Sargent NB8773 on a fire-rated opening?
Yes. The NB8773 is offered in both standard and fire rated versions, and the fire rated build is supplied less dogging. That is normal for a fire door, which has to latch on every closing, so mechanical hold-open dogging is not permitted. If you want the rail dogged open during business hours, you need the standard (non-rated) version, or the 58 electric dogging option.
6) I have narrow stile aluminum storefront doors. Will the Sargent NB8773 work?
No. The NB8773 is a wide stile device and needs 3-1/2 inches of stile bare minimum, 4-1/2 inches with lever trim, which most aluminum storefront stiles do not have. For narrow stile aluminum, look at the Adams Rite 8400 Series life-safety narrow stile mortise exit device, or the Von Duprin 5575 narrow stile crossbar mortise device, a Grade 1 field-reversible unit for 1-3/4 inch doors.
7) What is a comparable Grade 1 wide stile mortise exit device if the opening does not need an electrified function?
The Sargent NB8773 is a Grade 1 wide stile device with an electrified fail safe function. For a purely mechanical opening, the Von Duprin 9875-3FT is a Grade 1 wide stile mortise exit device in a 3 ft smooth case, non-handed, for doors 1-3/4 inch thick, and the Falcon 25-M-EO is a Grade 1 wide stile mortise exit device in exit only form at 36 inches for 1-3/4 inch doors. Both are mechanical devices, so access control at the door would be handled by other means.
8) Which of these mortise exit devices can go on a wood door?
The Sargent NB8773 is designed for wood or metal doors from 1-3/4 inch to 2-1/4 inch thick. Among comparable devices, the Adams Rite 3300 Series and 8300 Series are both listed for wood and hollow metal doors. The Detex 30 Series, Von Duprin 8875-3FT and Von Duprin 9875-3FT are all listed as not wood door compatible, so they are limited to metal openings.
9) Which comparable mortise exit devices are fire rated?
The Sargent NB8773 is offered in a fire rated configuration (less dogging) as well as a standard configuration. Of the comparable devices, the Adams Rite 3300 Series is fire rated and the Corbin Russwin ED5600AL is a Grade 1 three hour fire rated mortise exit device for 1-3/4 inch doors. The Adams Rite 8300 and 8400, Von Duprin 5575, 8875, 9475/9575 and 9875 are all listed as not fire rated, so they belong on non-rated openings.
10) Is the Adams Rite 8300 a direct substitute for the Sargent NB8773?
They are not interchangeable. Both are Grade 1 wide stile mortise exit devices, and the 8300 Series is a life-safety device for wood and hollow metal doors, but it is listed as non fire rated and it is a mechanical device. The NB8773 is an electrified fail safe device offered in 12V and 24V with options such as latchbolt monitor switch, signal switch in rail, remote dogging or latch retraction, electric dogging and Electroguard, and it is offered in a fire rated version. If the opening is tied to access control, the 8300 will not replace it.
11) Why a surface vertical rod exit device instead of a rim device on a pair of doors?
A surface vertical rod latches into the frame head rather than into a strike on the edge of the door, so it will secure a pair of doors with no center mullion. A rim device latches into a strike on the jamb or on a removable mullion, which means on a pair you either add a mullion or use vertical rods. The NB8773 is a top latch surface vertical rod, so the rods and latching hardware run on the face of the door where they can be serviced without stripping the door apart.
12) Does the Sargent NB8773 come with lever trim, or do I order that separately?
Trim is a selection on the device, not an afterthought. You can take it exit-only with no trim, or with ET trim in A, B, E, F, J, L, P or W lever designs. The lever letter is purely the shape of the lever, so pick whatever matches the rest of the openings in the building. Remember that adding trim raises the minimum stile requirement to 4-1/2 inches.
13) Can I put this on a wood door, or do I need a hollow metal door?
Wood is fine. The NB8773 is specified for wood or metal doors from 1-3/4 to 2-1/4 inches. That matters because several comparable wide stile mortise devices are metal-door only, including the Von Duprin 8875 and 9875 crossbar and smooth case units and the Detex 30 Series Advantex, all of which are listed as not wood door compatible.
14) Is the Sargent NB8773 Grade 1, and is that enough for a school or hospital exit?
Grade 1 is the rating, which is the heaviest commercial duty classification in ANSI/BHMA and what institutional specs normally call for on egress doors. The NB8773 is a commercial device and the series is used on school, healthcare, office, retail, industrial, government and multi-tenant residential openings. For a fire-rated stair or corridor door, order the fire rated (less dogging) build.
15) I want the doors to stay unlatched during business hours. What do I order on the Sargent NB8773?
Two routes. On a non-rated opening, take the standard (non fire rated) version, which allows dogging, and add option 58 electric dogging if you want it switched from a time clock or panel. Option 56 gives remote dogging and latch retraction for access control integration. On a fire rated opening none of that mechanical hold-open applies, since the fire rated build is supplied less dogging and the door has to latch every time it closes.
16) Does the alarmed option on the Sargent NB8773 work on any door width?
No. The AL alarmed option requires a 36 inch minimum door width, so it cannot be used on the 32 inch size. If you need a local alarm on a 32 inch leaf, you will have to handle it another way, such as the 53 latchbolt monitor switch or 55 signal switch in the rail feeding a panel.
17) We only need exit from the door, no lever trim - is there a simpler device than the Sargent NB8773?
The NB8773 can be ordered with ET lever trim in A, B, E, F, J, L, P or W lever styles, or as exit device only. If no outside trim is wanted at all, the BEST Precision 2301 Series is an exit only mortise device with heavy wrought construction, the Falcon 25-M-EO is a Grade 1 exit only wide stile device, and the Detex 30 Series Advantex is a Grade 1 device supplied as device only, exit only.
18) Do any comparable wide stile mortise exit devices use a crossbar or recessed push pad instead of a push rail?
The Sargent NB8773 is a push rail device with E, F, J and G rail configurations covering doors 24 to 48 inches wide. If a different actuator style is wanted, the Von Duprin 8875-3FT is a Grade 1 wide stile crossbar mortise exit device at 36 inches, non-handed, and the Von Duprin 9475/9575 Impact Series is a Grade 1 wide stile mortise device with a recessed push pad.
19) Our door is 42 inches wide - which of these devices covers that size?
The Sargent NB8773 is available in 32, 36, 42 and 48 inch sizes, with J Rail covering 37 to 42 inch doors, so a 42 inch opening is a stock size with no cutting required. Several comparable devices are catalogued at 36 inches or 3 ft, including the Falcon 25-M-EO wide stile, the Von Duprin 8875-3FT, the Von Duprin 9875-3FT and the Von Duprin 5575-3ft, which suits a 36 inch leaf rather than a 42 inch one.
20) What finishes does the Sargent NB8700 Series exit device come in?
Twelve finishes: 03 bright brass, 04 satin brass, 09 bright bronze, 10 satin bronze, 10B dark oxidized satin bronze oil rubbed, 10BE and 10BL dark oxidized satin bronze variants, 20D dark statuary bronze lacquered, 32 bright stainless, 32D satin stainless, plus BSP black suede and WSP white suede powder coats. For matching existing commercial openings, 32D satin stainless is the usual standard, and the powder coats are the ones to look at if you are matching dark storefront or painted frames.
How fast can I get the Sargent NB8773E 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 NB8773E 10BE come with a warranty?
Absolutely. The Sargent NB8773E 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 NB8773E 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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