Sargent 8237-ET Classroom Lock...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,769.56
$955.57
Sargent Sargent 8200 Series - (8237) Classroom Lock Function Escutcheon Trim, Heavy Duty Single Cylinder Mortise Lock, Grade 1 SGT-8237-ET

Sargent 8237-ET Classroom Lock Function Heavy Duty Grade 1 Mortise Lock with Escutcheon Trim

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Model: 8237 LE1A 26D
From the 8200 Series Collection
$1,769.56
$955.57
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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$955.57
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Sargent 8237-ET Grade 1 Classroom Function Mortise Lock with Escutcheon Trim

Industry Benchmark Mortise Lock with Maximum Security and Performance

The Sargent 8237-ET represents the industry benchmark for commercial mortise locks, delivering maximum security, performance, and durability with Grade 1 certification. This classroom lock function features heavy-duty construction with a 2 3/4" backset, 3/4" latchbolt throw, and field reversible handing for 1 3/4" door thickness. The multi-functional lock body integrates with all SARGENT key systems including Degree, Signature, KESO, and XC, while exceeding UL cycle testing at 16 million cycles for exceptional durability.

Professional Features & Benefits

  • Heavy-Duty Durability: UL Cycle Above and Beyond test completed at 16 million cycles (Verification ID: V584148) for long-term reliability in high-traffic commercial applications.
  • Grade 1 Performance: ANSI/BHMA A156.13 Series 1000 Operational Grade 1 certification ensures maximum security and performance standards.
  • Precision Construction: 2 3/4" backset depth with 3/4" latchbolt throw and curved lip strike for secure latching performance on 1 3/4" door thickness.
  • Field Reversible Design: Handing can be changed on-site for installation flexibility without requiring different inventory.
  • Universal Key System Compatibility: Integrates with all SARGENT key systems (Degree, Signature, KESO, and XC) for flexible master keying options.
  • Multi-Functional Capability: Available in 56 different functions including electromechanical, security and monitoring options with easy on-site function switching.
  • Fire-Rated Performance: UL 10C Fire-Rated up to 3 hours with positive pressure certification for life safety applications.
  • Manufacturer Warranty: 10-year limited warranty with 2-year coverage on electrical components for added confidence and protection.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness of 1 3/4", 2 3/4" backset, and handing as applicable to this mortise lock.
  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 and secure the lock body to door and strike to frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion with 3/4" latchbolt throw.
  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 8200 Series 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 demonstrates the manufacturer's confidence in long-term performance. Engineered for demanding commercial applications where dependable security and maximum durability are essential.

Product Specs

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

Sargent 8237 LE1A 26D – Frequently Asked Questions

1) What does classroom function mean on a Sargent 8237 mortise lock, and is it the right function for a school door?
Classroom function means the outside lever is locked and unlocked by key from the outside only. The inside lever always retracts the latch for free egress, and there is no inside thumbturn, so nobody can lock the door from inside the room. That is the traditional school corridor door setup. If your district wants teachers to lock down from inside the classroom without stepping into the hall, classroom function is the wrong choice, and you want a classroom security or intruder function instead.
2) Can the Sargent 8237-ET be used on a fire rated classroom door?
It is UL 10C fire rated up to 3 hours with positive pressure certification, so it goes on labeled openings up to a 3 hour rating. Grade 1 under ANSI/BHMA A156.13 Series 1000 Operational as well, which is what most institutional specs call for on a corridor door.
3) Do I have to order the Sargent 8237 handed, or can I flip it in the field?
Order it either way, the handing is changed on site. The 8237 lock body is field reversible, so one part number covers left and right hand openings and you can stock a single item for a building instead of splitting inventory. That is worth knowing on a re-key or fleet job where you do not want to survey every door's swing first.
4) What do I need to specify when ordering a Sargent 8237-ET besides the finish?
Four decisions. Escutcheon style (LE1, LS, LW1 or WT), lever design (A, B, E, F, J, L, P or W), cylinder (standard cylinder, less cylinder, 70 for small format interchangeable core prep less core, or 60 for large format IC prep less core), and keying (keyed different, keyed alike, or a specific key code). Cylinder and keying are both required selections. If you are pulling cores from your own IC system, take the 60 or 70 prep and select no keying.
5) Will the Sargent 8237 latch into the strike I already have in the frame?
The 8237 throws a 3/4 inch latchbolt and ships with a curved lip strike. A 3/4 inch throw is standard for a commercial mortise lock, so an existing ANSI mortise strike in a hollow metal frame will normally take it, but the strike lip has to reach past the stop and the frame prep has to be the ANSI 4-7/8 inch mortise cutout. If the old lock was a bored cylindrical lockset, the frame is prepped for a small ANSI strike and will need to be re-prepped.
6) Can I key a Sargent 8237 mortise lock into my existing master key system?
It takes all SARGENT key systems, including Degree, Signature, KESO and XC, so it drops into an existing Sargent masterkeyed building. It is a single cylinder keyed lock, keyed on the outside only. Order it keyed different, keyed alike, or to a specific key code if your system already has one assigned. If your facility runs a different manufacturer's cylinder, take the small format or large format interchangeable core prep less core and install your own.
7) What should I use instead of a Sargent 8237 if the classroom needs keypad or credential access rather than a key?
Three electronic classroom mortise locks cover that. The TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID, for 1-3/4 inch doors. The TownSteel FME-4000 is the electronic intruder classroom version with RFID, also Grade 1 heavy duty on 1-3/4 inch doors, for districts that want lockdown from inside the room. The Alarm Lock DL3500CR Trilogy is a Grade 1 classroom electronic mortise lock with 300 user codes for doors 1-5/8 to 1-7/8 inch thick. The 8237-ET is a mechanical, non-electronic lock, so any of these is a change of access method, not a trim swap.
8) What is the closest Grade 1 classroom mortise lock to the Sargent 8237 from another manufacturer?
The Corbin Russwin ML2003 is the nearest match: a Grade 1 classroom function mortise lockset in the ML2000 Series, built for 1-3/4 inch doors, which is the same door thickness the 8237-ET is set up for. Function and grade line up, so a classroom opening specified for the 8237 can be met by the ML2003 as long as the keying is coordinated. The difference to plan for is the key system - the 8237 body works with the SARGENT Degree, Signature, KESO and XC systems, so a facility already master keyed on SARGENT will keep that continuity with the 8237 and will need a separate keying decision on the ML2003.
9) The opening is a storeroom, not a classroom. What takes the place of the Sargent 8237 there?
Two Grade 1 storeroom mortise locksets fit that opening. The Accentra 8805FL is a Grade 1 storeroom function mortise lock in the 8800 Series with an Arcadia lever. The Cal-Royal NM8080 is a Grade 1 heavy duty storeroom mortise lockset for 1-3/4 inch doors, with an interchangeable core option that matches the way the 8237 can be ordered with small format or large format interchangeable core prep less core. Storeroom keeps the outside lever locked at all times with key retraction, which is a different behavior from the classroom function on the 8237.
10) Is a Schlage LE or Dormakaba Saffire wireless mortise lock a like-for-like swap for a Sargent 8237 on a fire rated classroom door?
Watch the grade. The Schlage LEBMB-ADD mobile-enabled mortise lock is Grade 2 with a 3 hour fire rating for 1-3/4 inch doors, and the Dormakaba Saffire LX-I-M002 RFID mortise lockset is BHMA Grade 2. The Schlage LEMD-GRW ENGAGE wireless mortise lock is Grade 1 with a 3 hour fire rating, so that is the one that holds the grade. The 8237-ET is Grade 1 and UL 10C fire rated up to 3 hours with positive pressure, which is the pair of numbers to check any wireless alternate against before it goes on a rated opening.
11) What is the difference between escutcheon trim and rose trim on a Sargent 8200 mortise lock?
Escutcheon trim is the long single plate that covers the lever and the cylinder together, which is the ET designation on the 8237. Rose trim uses separate round or sectional plates for the lever and the cylinder. Escutcheon is the usual pick on a retrofit because the larger plate hides old prep, screw holes and wear rings from whatever was on the door before. Four escutcheon styles are offered: LE1, LS, LW1 and WT.
12) Is the Sargent 8237 durable enough for a high traffic school or hospital corridor?
It completed UL's Cycle Above and Beyond test at 16 million cycles, verification ID V584148, which is well past the ANSI Grade 1 minimum. Heavy duty commercial construction. For a corridor door that gets hit every passing period, this is the class of lock you want.
13) What are the alternatives to a Sargent 8237 classroom mortise lock from other brands?
Two straight mechanical equivalents worth looking at: the Corbin Russwin ML2003 from the ML2000 Series is a Grade 1 classroom mortise 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 1-3/4 inch. Where the Sargent differs is the key system: it suites into Degree, Signature, KESO and XC, which matters if your campus is already standardized on Sargent cylinders.
14) I am replacing a Baldwin mortise lock in an older building. Will a Sargent 8237 drop in?
Probably not without re-prepping the door. The Sargent 8237 is a 2-3/4 inch backset lock body. Baldwin's 6301 and 6310 mortise lock bodies run a 2-1/2 inch backset, so the lever and cylinder holes in the door face land in different places and the mortise pocket depth differs. On a residential grade or ornamental opening it is usually cleaner to replace like for like; on a commercial door being upgraded to Grade 1, plan on a new door prep or a template check first.
15) Is there a lighter-duty classroom mortise lock than the Sargent 8237?
The Cal-Royal NM8070 is a heavy duty Grade 1 classroom mortise lockset with an auxiliary deadlatch, sized for 1-3/4 inch doors. It hits the same grade and function as the 8237 in a simpler package - a single classroom lockset rather than a body that switches among 56 functions on site and carries a UL cycle test completed at 16 million cycles. For a school corridor where the function will never change, the NM8070 covers the opening; where a district wants one lock body it can re-function later, the 8237 is the one that does that.
16) What is the equivalent of a Sargent 8237 for a restroom or a passage door in the same building?
Those are different functions and take different bodies. For a passage door, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating, and the Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors. For a restroom, the Cal-Royal NM8440 is a Grade 1 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. All of them are non-keyed or privacy functions, where the 8237 is a keyed single cylinder classroom lock.
17) Which mortise locks look like a substitute for the Sargent 8237 but will not work on a classroom door?
Several mortise products share the word mortise and nothing else. The Emtek 3019 Brisbane, 3102 Memphis, 3104 Hamilton and 3106 Manhattan are dummy function mortise entrance locksets - trim with no latch action, for an inactive leaf. The Schlage L0170 is a Grade 1 half dummy trim for 1-3/4 inch doors. The Kaba Ilco 185 Series is a deadbolt function mortise lock with no handing, and the Alarm Lock DL4500 is a Grade 1 electronic mortise deadbolt with a privacy keypad. A deadbolt or a dummy has no lever-retracted latch, so none of them delivers the classroom function the 8237-ET provides.
18) What replaces a Sargent 8237 on an opening that has to be released by the access control system?
For an electrified mortise body, the BEST 45HW is a heavy duty wired electromechanical mortise lock running 12V or 24V, and the Command Access ML190 is a heavy-duty storeroom mortise lock with field selectable fail safe or fail secure operation on 24VDC. The Schlage L9092EU with the 03A lever is a heavy duty electric lock/unlock outside lever mortise lock, keyed outside, with request to exit, on 12/24VDC for 1-3/4 inch doors. The 8237-ET as configured is a mechanical lock, so an access controlled opening moves to one of these bodies rather than adding trim to the 8237.
19) Can I use a Baldwin 6301 or 6310 mortise lock body in place of a Sargent 8237?
Not on the same door prep. The Baldwin 6301 entry/apartment and 6310 entry/storeroom mortise bodies are built on a 2-1/2 inch backset, while the 8237-ET runs a 2-3/4 inch backset, so the cylinder and spindle centerlines do not land in the same place in the pocket. Function differs as well: the 6301 is entrance/apartment and the 6310 is entrance/storeroom, neither of which is classroom. The 6301 is offered knob by knob and the 6301LS lever by lever, and the 6310 covers doors 1-3/8 inch and over.
20) Is there an alternative to the Sargent 8237 for a behavioral health or ligature resistant opening?
TownSteel covers that with anti-ligature mortise locksets: the MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, and the MRX-A-01 is the same passage function with satin stainless steel ligature resistant arch trim. Marks USA offers the 5PDN, a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant in satin stainless steel. All three are passage function, so they do not carry the keyed classroom control the 8237-ET provides, and the 8237's escutcheon trim uses a standard lever rather than a sloped anti-ligature profile.
21) Can a Codelocks CL2255 or a Dormakaba E-Plex be used where a Sargent 8237 is specified?
Only if the specification allows a keyless lock and, in the Codelocks case, a lighter duty rating. The Codelocks CL2255 is a medium duty electronic tubular mortise latch in the CL2000 Series with a brushed steel finish, so it does not meet a heavy duty requirement the way the 8237-ET does. The Dormakaba E-Plex 2066 is an electronic pushbutton keyless mortise lock built for wide stile doors, and the E-Plex E5086 is a Grade 1 back to back pushbutton and card entry/egress mortise lock. Each of those replaces the key with a code or a card rather than matching the 8237 on a SARGENT master key system.
22) The door is prepped for a cylindrical lock, not a mortise pocket. What do I order instead of a Sargent 8237?
A cylindrical lock cannot go into the same prep, and the reverse is true too. The Schlage PC10 is a Grade 1 passage cylindrical lock, non-keyed with a rose, for 1-3/4 inch doors - that is a bored prep, not the mortise cavity the 8237-ET requires. The 8237-ET is a mortise lock that needs a routed pocket in the door edge, so switching between the two means changing the door preparation, not just the lock.
23) What is the office or entrance function counterpart to the Sargent 8237 classroom mortise lock?
The Cal-Royal NM8050 is a heavy duty Grade 1 office/entrance mortise lockset with an 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, non-keyed. Office function lets the occupant lock the outside lever from inside; classroom function on the 8237-ET is keyed from the corridor side only. On a suite entry or an administrative office that is the distinction that decides which one goes on the door.
24) I need to match the Sargent 8237 to the finishes already in my building. What finishes does it come in?
Sixteen finishes, spanning 03 bright brass and 04 satin brass, 09 bright bronze, 10 satin bronze, 10B oil rubbed dark oxidized satin bronze, 10BE, 10BL, 14 bright nickel, 15 satin nickel, 20D dark statuary bronze, 26 bright chrome and 26D satin chrome, 32 bright stainless and 32D satin stainless, plus BSP black suede powder coat and WSP white suede powder coat. For most commercial corridor work you are matching 26D satin chrome or 32D satin stainless.
25) Can I convert a Sargent 8237 to a different lock function later without buying a new lock?
The 8200 lock body is multi-functional and covers 56 different functions, including electromechanical, security and monitoring versions, with function switching done on site. So a building standardized on 8200 bodies can change a classroom door to another function without swapping the whole lock. Note that changing function may still require different trim or a cylinder change on the door.
26) What lever styles come on the Sargent 8237, and does the lever matter for accessibility?
Eight lever designs are offered on the 8237: A, B, E, F, J, L, P and W. All eight are levers rather than knobs, and lever operation is what accessible openings require, since a lever can be worked without grasping or twisting the wrist. Pick the design that matches the rest of the building, the function is the same across them.
27) Is there an installation template for the Sargent 8200 mortise lock door prep?
Yes. Sargent publishes a mortise lock installation template covering the 7800 and 8200 Series with all sectional rose trims and escutcheon trims, and ZenSupply hosts it at zensupply.com/content/pdf/sargent/7800-8200-Series-Mortise-Locks-with-all-sectional-rose-trims-and-escutcheon-trims-template.pdf. Use it to mark the mortise cavity and the trim holes before you rout, since escutcheon trim and rose trim do not share the same face prep.
28) What is the difference between the Sargent 8237 and the Hager 3800 Series mortise locks for an escutcheon trim opening?
Both run a 2-3/4 inch backset, which is the point of overlap. The Hager 3810E is a Grade 1 passage mortise lock with escutcheon on a 2-3/4 inch backset for doors 1-3/4 to 2-1/2 inch, and the 3850E is a Grade 1 office mortise lock with lever and escutcheon, non-keyed, also 2-3/4 inch backset for the same thickness range. Hager also lists the 3810S with a rose instead of an escutcheon. The 8237-ET is the keyed classroom function on a 2-3/4 inch backset with escutcheon trim available in LE1, LS, LW1 and WT styles.
29) How does the Sargent 8237 compare with the BEST 45H mortise lock bodies for a field reversible install?
Both are heavy duty field reversible mortise bodies. The BEST 45HCA is a heavy duty mortise lock body in public entrance function with field reversible operation, and the 45HCAINL is the heavy duty 45HCA body in intruder function. The 8237-ET is likewise field reversible on site, so handing does not have to be declared at order time on either brand. The functions are what separate them - public entrance and intruder on the BEST bodies against classroom on the 8237.
How fast can I get the Sargent 8237 LE1A 26D delivered?
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Can I return it if it doesn’t work for me?
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Does the Sargent 8237 LE1A 26D come with a warranty?
Absolutely. The Sargent 8237 LE1A 26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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