Sargent 8290-ET Classroom Secu...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,932.33
$1,475.82
Sargent Sargent 8200 Series - (8290) Classroom Security Holdback Function Escutcheon Trim, Heavy Duty Double Cylinder Mortise Lock, Grade 1 SGT-8290-ET

Sargent 8290-ET Classroom Security Holdback Function Heavy Duty Double Cylinder Mortise Lock with Escutcheon Trim

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Model: 8290 LE1A 26D
From the 8200 Series Collection
$1,932.33
$1,475.82
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Selected Lever is
Selected Escutcheon is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,932.33
$1,475.82
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Sargent 8290-ET Classroom Security Holdback Function Heavy Duty Double Cylinder Mortise Lock with Escutcheon Trim

Industry Benchmark Mortise Lock with Maximum Security and Performance

The Sargent 8290-ET represents the industry benchmark for commercial mortise locks, delivering maximum security, performance, and durability with high-quality components. This Grade 1 heavy-duty lever-style mortise lock features a 2-3/4" backset, 1-3/4" door thickness compatibility, and 3/4" latchbolt throw for reliable operation. The multi-functional lock body accommodates classroom security holdback function with field-reversible handing for installation flexibility.

Professional Features & Benefits

  • Heavy-Duty Construction: Grade 1 operational rating with patented design and construction for maximum durability in demanding commercial applications.
  • Exceptional Durability: UL Cycle Above and Beyond test completed at 16 million cycles for long-term reliability in high-traffic environments.
  • Classroom Security Function: Specialized holdback function designed for educational facility security requirements and emergency lockdown procedures.
  • Universal Key System Compatibility: Integrates with all SARGENT key systems including Degree, Signature, KESO, and XC for flexible security management.
  • Multi-Functional Design: Available in 56 different functions with multifunctional lockbody allowing on-site function switching to reduce inventory requirements.
  • Comprehensive Certifications: UL 10C Fire-Rated up to 3 hours, ANSI/BHMA A156.13 Series 1000 Grade 1, ADA compliant, and NFPA 80 compliant for code compliance assurance.
  • Manufacturer Warranty: 10-year limited warranty with 2-year coverage on electrical components for added confidence and protection.
  • Vandal-Resistant Security: Multiple security features provide additional resistance against vandalism and unauthorized entry attempts.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including 1-3/4" door thickness, 2-3/4" backset, and field-reversible handing configuration.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for proper mortise preparation.
  3. Prepare door and frame by drilling required holes and routing mortise cavity as specified in manufacturer instructions.
  4. Install all mounting hardware including curved lip strike and secure the lock body to door per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, 3/4" latchbolt throw, 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 Classroom Security
  • Commercial Office Buildings
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities
  • Retail Establishments

Why Choose Sargent Quality?

Sargent mortise locks deliver professional-grade reliability with patented design and construction rated for 16 million cycles in independent UL testing. The 10-year limited warranty with 2-year electrical component coverage provides exceptional protection for demanding commercial applications. Engineered with comprehensive certifications including UL 10C Fire-Rating up to 3 hours and ANSI/BHMA Grade 1 operational rating, these locks represent the industry benchmark where dependable performance and maximum security are essential.

Product Specs

Series:
8200 Series
Grade:
Grade 1
Keyed Function:
Double Cylinder
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Subcategory:
Bored Locksets
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Classroom Security Holdback
Product Type:
Mortise Locks
Duty Level:
Heavy Duty
Handle Type:
Lever
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Classroom Security
Product Category:
Mechanical Locks
Collection:
8200 Series
Department:
Door Hardware

Sargent 8290 LE1A 26D – Frequently Asked Questions

1) What does the classroom security holdback function on the Sargent 8290 actually do?
The 8290 is a double cylinder classroom security lock, so there is a keyed cylinder on both sides. A teacher can lock or unlock the outside lever by key from inside the room without stepping into the corridor, which is what makes it a lockdown-capable classroom opening. The holdback feature lets the latch be held retracted so the door can stay on free passage during normal class hours and be secured by key when needed.
2) Will the Sargent 8290 mortise lock fit a 1-3/4 inch door with a 2-3/4 inch backset?
Yes. The 8290-ET is built for 1-3/4 inch door thickness with a 2-3/4 inch backset, which is the standard commercial mortise prep. The latchbolt throws 3/4 inch, so it engages a standard ANSI mortise strike with a curved lip. If your existing opening is already prepped for an ANSI mortise lock body at 2-3/4 inch backset, the door work is done.
3) Is the Sargent 8290 fire rated for a labeled classroom door?
Yes. The 8290 is UL 10C fire rated up to 3 hours and NFPA 80 compliant, along with ANSI/BHMA A156.13 Series 1000 Grade 1 and ADA compliance. That covers a labeled corridor or classroom door in a school or healthcare facility.
4) What do I have to choose for cylinders and keying when ordering the Sargent 8290?
Two decisions are required. Cylinder: standard cylinder, less cylinder, 70 prep for small format interchangeable core less core, or 60 prep for large format interchangeable core less core. Keying: keyed different, keyed alike, or a specific key code (pick None if you selected less cylinder so your locksmith can supply cores). Because it is a double cylinder lock, remember you are keying both sides. It works with all Sargent key systems including Degree, Signature, KESO and XC.
5) What is a comparable Grade 1 mechanical classroom mortise lock to the Sargent 8290-ET from another manufacturer?
The Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset for 1-3/4 inch doors, and the Cal-Royal NM8070 is a Grade 1 heavy duty classroom mortise lockset with an auxiliary deadlatch, also for 1-3/4 inch doors. Both are keyed mechanical mortise locks in classroom function. The Sargent 8290 differs in that it is a double cylinder classroom security holdback function, meaning it is keyed on both sides so the inside cylinder can secure the door without opening it during a lockdown, where a standard classroom function is keyed outside only.
6) If the school wants keypad or credential access on the classroom door instead of a key, what should be used?
For electronic classroom function, the TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID technology for 1-3/4 inch doors, and the FME-4000 adds an electronic intruder classroom function with RFID. The Alarm Lock DL3500CR is a Grade 1 Trilogy electronic classroom mortise lock with 300 user codes for doors 1-5/8 to 1-7/8 inch thick. The Sargent 8290-ET is a mechanical, non-electronic lock keyed on both sides.
7) Will a Baldwin 6310 mortise lock work in the same door prep as the Sargent 8290-ET?
No. The Baldwin 6310 entry/storeroom mortise lock body uses a 2-1/2 inch backset, and the 6301 entry/apartment body is also 2-1/2 inch backset. The Sargent 8290-ET is a 2-3/4 inch backset lock, so the cross bore and cylinder centerline do not line up between the two and the door would need re-prepping.
8) Do I need to specify handing when I order the Sargent 8290 mortise lock?
The lock body is field reversible, so handing is set at install rather than at the order desk. That matters for a property manager or school district buying a batch: one part number covers left and right hand openings and you are not stuck with a shelf of wrong-hand locks.
9) Which lever and escutcheon styles can I get on the Sargent 8200 classroom lock, and can I match the rest of my building?
Eight lever designs are offered (A, B, E, F, J, L, P and W) on four escutcheon trims: LE1, LS, LW1 and WT. Finishes run to sixteen, from 26D satin chrome and 32D satin stainless for institutional work through 10B oil rubbed bronze, 03 bright brass, 15 satin nickel and BSP/WSP black or white suede powder coat. If the other openings in the building are already 8200 Series, pick the same lever letter and finish code and the trim matches.
10) Is the Sargent 8290 tough enough for a high traffic school corridor?
It is a Grade 1 heavy duty commercial lock, and Sargent completed UL's Cycle Above and Beyond test on the 8200 body at 16 million cycles. For a classroom or corridor door cycled hundreds of times a day, that is the wear class you want rather than a Grade 2 lock.
11) Can I change the function later if the 8290 classroom security lock is not what the room needs?
Yes. The 8200 lock body is multifunctional and covers 56 functions, and the function can be switched on site. Districts and large facilities use that to stock one body and set storeroom, office or classroom security as each opening requires instead of carrying separate part numbers.
12) Is the escutcheon trim included with the Sargent 8290-ET, or do I order it separately?
Escutcheon trim comes with it. The ET designation means the lock ships with escutcheon plates rather than roses, and you select the escutcheon style (LE1, LS, LW1 or WT), the lever design and the finish as part of the order. A curved lip strike is part of the mounting hardware for the install.
13) What is the right mortise lock for a storeroom or utility door where classroom security is not needed?
For a door that stays locked outside with free egress, the Accentra 8805FL is a Grade 1 storeroom mortise lock with an Arcadia lever, and the Cal-Royal NM8080 is a Grade 1 heavy duty storeroom mortise lockset with an interchangeable core option for 1-3/4 inch doors. The Sargent 8290 is a double cylinder classroom security holdback function, which carries an inside cylinder that a storeroom door does not require.
14) Is a BEST 45HCA intruder lockbody the same thing as the Sargent 8290 classroom security lock?
No. The BEST 45HCAINL is a heavy duty mortise lockbody with intruder function sold as a lock body, so lever trim and cylinder are ordered separately. The Sargent 8290-ET is supplied as a complete lever lockset with escutcheon trim, available in A, B, E, F, J, L, P and W levers and LE1, LS, LW1 or WT escutcheons. Both address lockdown from inside the room, but the BEST item is a body only.
15) What mortise lock should go on the corridor or office doors in the same building as the Sargent 8290-ET classrooms?
For office doors, the Cal-Royal NM8050 is a Grade 1 heavy duty office/entrance mortise lockset with auxiliary deadlatch for 1-3/4 inch doors, and the Hager 3850E is a Grade 1 office mortise lock with lever and escutcheon on a 2-3/4 inch backset for doors 1-3/4 to 2-1/2 inch thick. For a non-latching passage opening, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation. The Sargent 8290-ET shares the 2-3/4 inch backset, so the door prep is consistent across those openings.
16) What mortise lock suits a behavioral health or patient room where ligature resistance is required, rather than the Sargent 8290-ET?
For those rooms the TownSteel MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset in stainless steel with passage function, the MRX-A-01 is the same passage function with satin stainless ligature resistant arch trim, and the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant. The Sargent 8290-ET uses conventional lever trim in A through W lever styles, which is not a ligature resistant profile.
17) What should be specified if the classroom door needs to be released remotely from an access control panel?
For electrified operation, the Schlage L9092EU with 03A trim is a heavy duty electric lock/unlock outside lever mortise lock, keyed outside, with request to exit and 12/24VDC operation for 1-3/4 inch doors. The Command Access ML190 is a heavy duty motorized mortise lock with field selectable EL or EU operation on 24VDC in storeroom function, and the BEST 45HW is a heavy duty wired electromechanical mortise lock with 12V/24V operation. The Sargent 8290-ET is mechanical only and is not wired to a panel.
18) Is a Schlage PM010 or PC10 an alternative to the Sargent 8290-ET on a classroom door?
Only for an opening that never locks. The Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock and the PC10 is a Grade 1 passage cylindrical lock with rose, both for 1-3/4 inch doors, and neither accepts a cylinder. Note also that the PC10 is cylindrical and needs a bored prep, not a mortise pocket like the Sargent 8290-ET.
19) Can a Schlage L0170 dummy trim or an Emtek mortise dummy be used in place of the Sargent 8290-ET?
No. The Schlage L0170 is a Grade 1 half dummy trim, non-keyed, for 1-3/4 inch doors, and the Emtek 3102 Memphis and 3104 Hamilton are dummy mortise entrance locksets. Dummy trim has no latch and no cylinder, so it is for inactive leaves and pull-only doors. The Sargent 8290-ET is a keyed double cylinder lock with a 3/4 inch latchbolt throw.
20) What is the simpler alternative for a restroom or single occupancy door that does not need keying?
For privacy openings the Cal-Royal NM8440 is a Grade 1 heavy duty privacy mortise lockset with deadbolt for 1-3/4 inch doors, and the Hager 3840S is a Grade 1 privacy mortise lock with a 2-3/4 inch backset for doors 1-3/4 to 2 inch thick. Both are thumbturn operated rather than keyed, where the Sargent 8290-ET is a keyed double cylinder lock.
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Does the Sargent 8290 LE1A 26D come with a warranty?
Absolutely. The Sargent 8290 LE1A 26D 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 8290 LE1A 26D?
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