Sargent NB8743 Classroom Funct...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,607.89
$2,421.96
Sargent NB8700 Series - (NB8743) Classroom Function With Freewheeling Trim Wide Stile Grade 1 Surface Vertical Rod Exit Device

Sargent NB8743 Classroom Function Surface Vertical Rod Exit Device with Freewheeling Trim Wide Stile Grade 1

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Model: NB8743E 10BE
From the NB8700 Series Collection
$3,607.89
$2,421.96
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$3,607.89
$2,421.96
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Sargent NB8743 Classroom Function Surface Vertical Rod Exit Device with Freewheeling Trim Wide Stile Grade 1

Professional Grade 1 Exit Device Solution

The Sargent NB8743 Classroom Function Surface Vertical Rod Exit Device delivers professional-grade security and egress control for educational and commercial 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 for trim applications and features Grade 1 construction meeting BHMA standards for heavy-duty commercial use. The wide stile design provides enhanced durability and aesthetic appeal while maintaining classroom function capabilities with freewheeling trim functionality.

Professional Features & Benefits

  • Door Thickness Compatibility: Accommodates wood or metal doors from 1-3/4" to 2-1/4" thick with flexible installation requirements for various door constructions.
  • Stile Width Requirements: Designed for 4-1/2" minimum stile width with trim and 3-1/2" minimum without trim, providing versatile installation options for different door configurations.
  • Versatile Door Width Options: Available in multiple rail configurations - 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 with no cutting required for standard sizes.
  • Grade 1 Construction: Meets BHMA Grade 1 standards for heavy-duty commercial applications requiring maximum durability and reliability in high-traffic environments.
  • Classroom Function Design: Specifically engineered for educational environments with freewheeling trim functionality that provides appropriate security control while maintaining emergency egress capability.
  • Top Latch Configuration: Surface vertical rod design with top latch mechanism ensures reliable latching performance and smooth operation throughout the door’s service life.
  • Wide Stile Compatibility: Designed for wide stile doors providing enhanced structural integrity and professional appearance in commercial installations.
  • Comprehensive Product Line: Part of Sargent’s complete exit device family offering simplicity, strength, durability, aesthetics and innovation for both rated and non-rated openings.

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

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

Why Choose Sargent Quality?

Sargent NB8700 Series exit devices deliver professional-grade reliability with Grade 1 construction engineered for demanding commercial applications. The comprehensive product line combines simplicity, strength, durability, aesthetics and innovation to provide the best combination of performance features for both rated and non-rated openings. Engineered for demanding commercial applications where dependable egress performance is 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:
Classroom
Grade:
Grade 1
Model Series:
NB8700 Series
Product Model:
NB8743
Product Function:
Classroom
Product Category:
Exit Devices and Trim
Collection:
NB8700 Series
Department:
Door Hardware

Sargent NB8743E 10BE – Frequently Asked Questions

1) Which rail length do I order for my door width on the Sargent NB8700 exit device?
Rail selection follows 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, with no cutting on standard sizes. On the order that shows up as the 32, 36, 42, and 48 inch size choices. Measure the actual door leaf, not the frame opening.
2) Does classroom function on the NB8743 mean the door can be locked from outside with a key?
Classroom function here means the outside lever is controlled by the cylinder: key the outside trim to lock or unlock it, and the push rail always retracts the latches for free egress from inside. The freewheeling ET trim spins when locked instead of binding, so a student yanking the lever won't damage the trim. That's the behavior schools and offices usually want when they need to secure a room from the corridor without touching egress.
3) Is the Sargent NB8743 handed, and how do I determine which one to order?
Handing is required on the NB8743 and it is not field reversible from the order form: you pick RHR (right hand reverse) or LHR (left hand reverse). Stand outside the door, on the pull side; if the hinges are on your right and the door swings toward you, it is right hand reverse. If you need a non-handed device to keep one part on the shelf for both leaves, the Von Duprin 8875 and 9875 wide stile mortise devices are listed non-handed.
4) Will this exit device secure a pair of doors without a mullion?
It's a surface vertical rod device with a top latch, so it latches into the frame head rather than into a strike on the edge of the door. That is what lets it work on a pair of doors with no center mullion. If your opening is a single door in a frame with a normal edge strike, a rim or mortise-latch style device is the simpler choice.
5) Can I use the Sargent NB8743 on a narrow stile aluminum storefront door?
No. The NB8743 is a wide stile device needing 4-1/2 inch minimum stile with trim and 3-1/2 inch without. For narrow stile aluminum doors, the Adams Rite 8400 Series is a Grade 1 narrow stile mortise exit device for aluminum doors, and the Von Duprin 5575 is a Grade 1 narrow stile crossbar mortise device in a 3 foot size for 1-3/4 inch doors, field reversible and not fire rated.
6) What is the closest alternative to the Sargent NB8743 if I need classroom lever trim on a wide stile door?
The Corbin Russwin ED5600AL is the nearest match in intent. It is a Grade 1 wide stile mortise exit device built to be used exit only or with classroom or passage lever trim, though that trim is not included, while the Sargent NB8743 is a Grade 1 classroom function device offered with ET lever trim in A, B, E, F, J, L, P and W lever styles or as device only. The ED5600AL is also a 3 hour fire rated device listed for 1-3/4 inch doors, where the NB8743 covers 1-3/4 inch to 2-1/4 inch thickness.
7) Will a Von Duprin 9875 or 8875 drop in where a Sargent NB8743 is installed?
Treat it as a new prep, not a swap. Both the Von Duprin 9875 and 8875 are Grade 1 wide stile mortise exit devices in 3 foot lengths for 1-3/4 inch doors, and both are listed as non-handed and not compatible with wood doors; the 8875 uses a crossbar and the 9875 a smooth case. The Sargent NB8743 is a surface vertical rod device with a top latch, handed RHR or LHR, that fits wood or metal doors from 1-3/4 inch to 2-1/4 inch. The rod and top latch preparation on the NB8743 opening does not correspond to a mortise lock body device, so a changeover means new door and frame prep.
8) Which of these exit devices work on a wood door?
The Sargent NB8743 is stated to accommodate wood or metal doors, and the Adams Rite 3300 and 8300 Series are described for wood and hollow metal doors. The Detex 30 Series and the Von Duprin 8875 and 9875 are listed as not wood door compatible, so on a wood leaf they are out of scope regardless of grade.
9) What lever trim options come with the Sargent NB8700 Series, and can I order the device without trim?
Outside trim is ordered as ET trim in A, B, E, F, J, L, P, or W lever designs, or you can order the device alone with no trim for exit only openings. Skipping trim also drops your stile requirement from 4-1/2 inches to 3-1/2 inches. Cylinder is a separate line item on classroom function, since the key controls the outside lever.
10) I just need an exit-only device on a stairwell door, not classroom function. What should I look at instead?
If nobody needs key access from the outside, you're paying for trim and a cylinder you won't use. Order the NB8743 with the no-trim option, or look at a dedicated exit only device such as the Falcon 25-M-EO wide stile, the BEST Precision 2301 Series, or the Detex 30 Series Advantex (metal doors only on the Detex).
11) Can I use the Sargent NB8743 on a wood door?
Yes. The NB8743 mounts on wood or metal doors within the 1-3/4 to 2-1/4 inch thickness range. That matters because several wide stile Grade 1 mortise devices are metal-door only, including the Von Duprin 8875 and 9875 and the Detex 30 Series.
12) I only need free egress with no outside trim - what is a simpler device than the Sargent NB8743?
If nobody needs to key in from the outside, an exit only device covers it. The Falcon 25-M-EO is a Grade 1 wide stile mortise exit device listed as exit only for 1-3/4 inch doors in a 36 inch, 3 foot size, and the BEST Precision 2301 is a mortise exit device in exit only configuration with heavy wrought construction. The Detex 30 Series Advantex is another Grade 1 wide stile mortise device supplied as device only. The Sargent NB8743 differs in that it is a classroom function device with freewheeling ET lever trim, so choose it when outside key control at the opening is part of the spec.
13) Is the Von Duprin 9475/9575 a good substitute for the Sargent NB8743 in a high abuse area?
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 pad out of the path of carts and traffic; it is listed as not fire rated. The Sargent NB8743 is a Grade 1 wide stile surface vertical rod device with classroom function and freewheeling ET lever trim. The main difference for your opening is latching: the 9475/9575 latches into the frame at the lock edge, while the NB8743 latches at the top of the door through a vertical rod, which is what you want on a pair of doors without a mullion.
14) I need electric latch retraction or door position monitoring on the exit device - does the Sargent NB8743 cover that or do I need a different brand?
The NB8743 is ordered with electric options including a latchbolt monitor switch, an internal micro switch in the ET control, a signal switch in the rail, remote dogging and latch retraction, electric dogging, electroguard and an alarmed version with a 36 inch minimum door width. Among the wide stile mortise peers, the Detex 30 Series Advantex and the Falcon 25-M-EO are catalogued as exit only or device only configurations, so if switching and access control tie-in is part of the scope the Sargent is the direct answer.
15) Do I have to specify handing on the Sargent NB8743 the way I would on other exit devices?
Yes. The NB8743 is ordered as RHR right hand reverse or LHR left hand reverse. Several wide stile mortise peers avoid that step: the Von Duprin 8875 and 9875 are listed as non-handed and the Von Duprin 5575 as field reversible. Confirm the swing before placing a Sargent order, since the device is built to the hand.
16) What finishes does the Sargent NB8743 come in for matching existing hardware in a building?
Twelve finishes: 03 bright brass, 04 satin brass, 09 bright bronze, 10 satin bronze, 10B dark oxidized satin bronze oil rubbed, 10BE, 10BL clear coated, 20D dark statuary bronze lacquered, 32 bright stainless, 32D satin stainless, plus BSP black and WSP white suede powder coat. 32D is the usual match for existing commercial school and office openings.
How fast can I get the Sargent NB8743E 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 NB8743E 10BE come with a warranty?
Absolutely. The Sargent NB8743E 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 NB8743E 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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