Sargent 7G37 Classroom Functio...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$295.00
$192.19
SGT-7G37

Sargent 7G37 Classroom Function Single Cylinder Cylindrical Lock Grade 2

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Model: 28LC-7G37 LB 26D
From the 7 Line Series Collection
$295.00
$192.19
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$295.00
$192.19
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Sargent 7G37 Classroom Function Grade 2 Cylindrical Lock with Single Cylinder

Professional Grade 2 Cylindrical Lock for Commercial Applications

The Sargent 7G37 Classroom Function Single Cylinder Cylindrical Lock delivers Grade 2 performance with 2 3/4" standard backset and 1 3/4" door thickness compatibility. This key-in-lever lock exceeds ANSI/BHMA A156.2 standards for cycling and durability, featuring internal through-bolts for enhanced strength without additional door preparation. UL-cUL fire-rated up to 3 hours with ADA compliance and 5-year limited warranty coverage.

Professional Features & Benefits

  • Door Compatibility: Accommodates 1 3/8" to 1 3/4" door thickness with 2 3/8" to 2 3/4" backset options for versatile installation requirements.
  • Grade 2 Durability: Exceeds ANSI/BHMA A156.2 standards for cycling and durability, engineered for standard duty commercial interior and exterior applications.
  • Internal Through-Bolt Construction: Provides superior strength and stability while minimizing additional door preparation requirements for efficient installation.
  • Fire-Rated Performance: UL-cUL listed for fire-rated applications up to 3 hours with NFPA 80 compliance for critical life safety installations.
  • Universal Key System Compatibility: Available with all Sargent key systems including Degree, Signature, KESO, and XC for flexible master keying options.
  • ADA Compliant Design: Meets Americans with Disabilities Act requirements and ICC A117.1 compliance for accessible building applications.
  • Anti-Microbial Option: Available with Microshield® antimicrobial coating in 15 architectural grade finishes for enhanced hygiene protection.
  • Manufacturer Warranty: 5-year limited warranty provides long-term protection and confidence in commercial applications.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness (1 3/8" to 1 3/4"), backset depth (2 3/8" to 2 3/4"), and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for modified 161 door prep.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install internal through-bolts and secure the cylindrical lock to door 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 Classroom Security
  • Healthcare Institutions and Medical Offices
  • Commercial Office Buildings
  • Government and Municipal Buildings
  • Hotel and Hospitality Properties
  • Public Buildings and Facilities
  • Multi-Tenant Commercial Properties

Anti-Microbial Option

Available with Microshield® antimicrobial coating for enhanced hygiene protection in healthcare, educational, and high-traffic commercial environments. This optional coating provides additional protection against microbial growth on lock surfaces.

Why Choose Sargent Quality?

Sargent 7 Line Series cylindrical locks deliver professional-grade reliability with internal through-bolt construction and Grade 2 performance that exceeds ANSI/BHMA A156.2 cycling and durability standards. UL-cUL fire-rated up to 3 hours with comprehensive certifications including ADA compliance and 5-year limited warranty coverage. Engineered for demanding commercial applications where dependable performance and code compliance are essential.

Product Specs

Series:
7 Line Series
Grade:
Grade 2
Keyed Function:
Single Cylinder
Subcategory:
Bored Locksets
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Lock Function:
Classroom
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Duty Level:
Standard Duty
Handle Type:
Lever
Product Attribute:
Cylindrical Locks
Product Function:
Classroom
Door Hand Direction:
Non-Handed
Product Category:
Mechanical Locks
Collection:
7 Line Series
Department:
Door Hardware

Sargent 28LC-7G37 LB 26D – Frequently Asked Questions

1) Will the Sargent 7G37 classroom lock fit a 1-3/8 inch door, or is it 1-3/4 only?
Both. The 7G37 covers 1-3/8 inch through 1-3/4 inch doors, so it goes on older interior wood doors and standard commercial 1-3/4 inch openings without a filler or a different chassis. Backset is a required choice at order time, either 2-3/8 or 2-3/4 inches, so measure from the door edge to the center of the bore before you specify.
2) What does classroom function actually do on a Sargent 7G37?
Classroom function means the outside lever is locked and unlocked by key only. There is no button or turn on the inside, so nobody can accidentally lock the room from within, and the inside lever always retracts the latch for free egress. That is why it is specified for schools, clinics and offices where a staff member with a key controls the door. If you want the ability to lock the door from inside the room without opening it, classroom function is the wrong choice.
3) Do I have to order the Sargent 7G37 left hand or right hand?
No handing to specify. The 7G37 is non-handed, so one part number works on a left or right swing and you can stock a single lock across a building instead of splitting the order. Handedness only enters into your strike and lip length choice, since the lip has to shed traffic in the right direction.
4) Can I get the Sargent 7G37 keyed alike with the other locks in my building?
Keying is a required selection on the 7G37 and covers keyed different, keyed alike, and master keyed, plus standard keying. If you are adding rooms to an existing Sargent system, order master keyed or keyed alike and give your keyway, since 41 keyways are offered including LA as standard and the CA, CB, CC, CE, CF, CG, CJ, CK, CL, CR, HA through HK, LB through LL, R, RA through RL, S and U families. Matching the existing keyway is what lets the building master turn the new lock.
5) What is the difference between the LC, 60 and 70 cylinder options on a Sargent 7G37?
Four cylinder builds. Standard is a 6-pin conventional cylinder, shipped keyed to your specified keyway. LC is less cylinder, which means the lock arrives with no cylinder so a locksmith can drop in the house core. 60 is the Sargent large format interchangeable core prep with a plastic disposable construction core, and 70 is the small format interchangeable core prep with the same disposable construction core. Order 60 or 70 when the building runs interchangeable cores and you want the trades using a throwaway construction key until turnover, then the permanent core goes in with a control key and no disassembly.
6) Is the Sargent 7G37 lever lock approved for a fire rated door?
Fire rated, UL and cUL listed up to 3 hours with NFPA 80 compliance. The lever trim is ADA compliant and meets ICC A117.1, so it also satisfies accessible-route hardware on the same opening. That combination is what lets a single classroom lock carry a rated corridor door in a school or hospital.
7) What is the difference between a classroom lock and a classroom security lock when specifying lever hardware?
The Dexter C1000 classroom security lever (DEX-C1000-CSEC) is a Grade 1 keyed classroom security function for 1-3/8 inch to 1-3/4 inch doors; classroom security means the outside lever is locked and unlocked by a key cylinder on the inside as well, so a teacher can secure the door without stepping into the corridor. The Sargent 7G37 is a single cylinder classroom function, keyed on the outside only. If a district lockdown policy requires locking from inside the room, the classroom security function is the one that meets it.
8) What is the closest classroom function lever lock to the Sargent 7G37 from another manufacturer?
The Dexter C1000 Series classroom cylindrical lever lock (DEX-C1000-CLRM) is the nearest classroom-function cylindrical leverset in the same duty class of hardware. It is a keyed classroom function lock with a clutching lever and a 1-3/8 inch to 1-3/4 inch door thickness range, and it is rated Grade 1. The Sargent 7G37 is a Grade 2 classroom function cylindrical lock with single cylinder keying. Both cover the same opening type - a corridor door keyed outside, always free egress inside - so the choice comes down to whether the specification calls for Grade 1 or Grade 2 and whether the facility keys to Sargent cylinders.
9) Is there a Grade 2 classroom lever lock that uses a Schlage C keyway instead of a Sargent keyway?
The Cal-Royal AG03 is a Grade 2 classroom lever with a 6-pin Schlage C keyway keyed different and a 2-3/4 inch backset. It suits a building already keyed to Schlage C, where adding a Sargent cylinder would create a second key system. The Sargent 7G37 is a Grade 2 classroom lock ordered in Sargent keyways - LA standard plus the CA, HA, LB, R and S families - and takes Sargent large format (60) or small format (70) interchangeable cores, so it is the choice when the facility masterkeys on Sargent.
10) Which lever lock should be used on a classroom door that must stay locked at all times instead of a classroom function?
For a door meant to stay locked outside with free egress inside, a storeroom function lever such as the Cal-Royal AG05 (Grade 2, storeroom function, deadlocking latchbolt, 1-3/8 inch to 1-3/4 inch door thickness) or the Hager 2580 (Grade 2 storeroom, 1-3/8 inch to 2 inch doors) is the correct function. The Sargent 7G37 is classroom function: the outside lever is locked and unlocked by key, so the door can be left unlocked during periods of occupancy. Choose storeroom when the outside lever should never be left free, and classroom when staff need to key it open and closed through the day.
11) What lever lock handles a door thicker than 1-3/4 inches when a classroom lock will not fit?
The Sargent 7G37 covers 1-3/8 inch to 1-3/4 inch doors. For thicker leaves, the Falcon K101 is a Grade 1 heavy duty cylindrical lock rated for 1-3/8 inch to 2-1/4 inch doors, and the Corbin Russwin CL3110 covers 1-3/4 inch to 2 inch; both are passage function, so they apply where the thick door does not need keying. The Dexter C1000 asylum function lever covers 1-3/8 inch to 2 inch on a Grade 1 keyed lock. Confirm the leaf thickness before ordering, because it decides the whole substitution.
12) Does an entrance or office function lever do the same job as a classroom function lever?
No. An entrance/office lever such as the Falcon B511CP6D (Grade 2, medium duty, entrance/office) or the Hager 2525 (Grade 2 commercial entry, 1-3/8 inch to 2 inch doors) is locked and unlocked from inside by a button or turn, so anyone inside the room can secure it. The Sargent 7G37 classroom function has no inside locking control; the outside lever is controlled by key only, which is why schools use it - a student cannot lock the door. They look alike on the door and are not interchangeable when a policy depends on who can lock the opening.
13) Is a Grade 2 lock like the Sargent 7G37 enough for a school corridor, or do I need Grade 1?
The 7G37 is Grade 2, standard duty, and exceeds ANSI/BHMA A156.2 for cycling. That is the right call for classroom, office and interior institutional doors where the traffic is heavy but not abusive. On a main entrance, a stairwell, or a door that takes constant public use, step up to Grade 1: ZenSupply carries the Dexter C1000 classroom lever, a Grade 1 clutching cylindrical lock rated for 1-3/8 to 1-3/4 inch doors, which covers the same openings at the higher grade.
14) What else could I buy instead of a Sargent 7G37 classroom lever?
Two real alternatives in the same cylindrical classroom family. The Cal-Royal AG03 classroom lever is Grade 2 with a 6-pin Schlage C keyway keyed different and a 2-3/4 inch backset, which suits a building already on Schlage C keys. The Dexter C1000 classroom lever is Grade 1 with a clutching lever and fits 1-3/8 to 1-3/4 inch doors, the same thickness range as the 7G37. The 7G37 is the one to keep if your building is keyed into a Sargent system, because it is the only one of the three offered across the full Sargent keyway list.
15) Does installing a Sargent 7G37 require extra door prep for the through-bolts?
No extra prep. The 7G37 uses internal through-bolts, so the tie between the two roses happens inside the chassis rather than through separate bolt holes bored in the door face. It sets into a modified 161 prep off the manufacturer template. That matters on a retrofit, because it means you are not adding holes to a door face you would rather leave alone.
16) Can a passage lever be used in place of a keyed classroom lever on an interior door?
Only where the door never needs to lock. A passage lever such as the Falcon B101 (Grade 2, medium duty, non-handed) or the Hager 2510 (Grade 2 passage, 1-3/8 inch to 2 inch doors) latches the door but has no cylinder and cannot be secured. The Sargent 7G37 is keyed with a single cylinder and a classroom function, which is what a corridor door needs when it has to be locked against entry. Passage hardware fits closets, storage rooms and pairs where the security comes from a different device on the opening.
17) Which cylindrical lever lock is specified when a Grade 1 lock is required rather than Grade 2?
The Sargent 7G37 is a Grade 2 standard duty cylindrical lock. Where a Grade 1 lock is written into the specification, the Grade 1 cylindrical levers include the Dexter C1000 entry/office (DEX-C1000-ENTR, 1-3/8 inch to 1-3/4 inch doors), the Falcon T101 heavy duty passage lever, the Corbin Russwin CL3110 vandal resistant passage lever (fire rated, 1-3/4 inch to 2 inch doors), and the Design Hardware X75 passage lever for 1-3/4 inch doors. Match the function first, then the grade, since these Grade 1 peers are not all keyed.
18) What is used instead of a keyed classroom lever when the room needs code access rather than keys?
A mechanical or electronic keypad leverset replaces the cylinder with a code. The Lockey 1150 is a heavy duty mechanical keypad lever set with double combination, passage function, for 1-1/8 inch to 2 inch doors; the Delaney LP250 is a Grade 2 electronic keypad leverlock. These suit rooms where credentials change often and rekeying is the burden. The Sargent 7G37 is a keyed single cylinder classroom lock and stays the choice where the room must sit inside an existing master key system, since it accepts Sargent large format and small format interchangeable cores.
19) Which lever lock suits a patient room or holding room rather than a classroom door?
An asylum or institution function is the one written for those openings: the Dexter C1000 asylum lever (DEX-C1000-ASYL) is Grade 1 for 1-3/8 inch to 2 inch doors, and the Arrow MK33-BD-CS is a Grade 2 heavy duty asylum knob with a conventional Schlage C keyway cylinder. Asylum function is keyed on both sides, so the door does not free-egress on the inside lever. The Sargent 7G37 classroom function always allows free egress from inside, which is what corridor and classroom doors require under life safety code.
20) What lever lock is used for a classroom door that has to release on an access control signal?
An electrified cylindrical lever such as the Corbin Russwin CL33903 fail safe lever (Grade 1, 12VAC/DC, 1-3/4 inch to 2 inch doors) unlocks the outside lever when power is removed, which is how a door tied to a card reader or fire alarm interface is built. The Sargent 7G37 is a mechanical classroom lock keyed by cylinder with no electrified option, so it fits openings controlled by key rather than by a credential system. If the drawing shows conduit to the hinge and a power transfer, the electrified lever is the correct part.
21) Is a knob lock an equivalent substitute for a classroom lever lock?
Not where accessibility governs. Knob locks like the Arrow HK11 turn-pushbutton entrance ball knob (Grade 2, 1-3/8 inch to 1-3/4 inch doors) or the Arrow MK02-TA privacy tudor knob cover the same bored prep but require grasping and twisting. The Sargent 7G37 uses a lever handle and is ADA compliant to ICC A117.1, which is what a classroom, corridor or public building door needs. The knob is an option only on doors exempt from accessible operable parts requirements.
22) What lever styles and finishes does the Sargent 7 Line 7G37 come in?
Three lever designs, B, L and P, across 14 finishes. Brass and bronze run 03 bright brass, 04 satin brass, 09 bright bronze, 10 satin bronze, and the dark oxidized bronzes 10B oil rubbed, 10BE, and 10BL clear coated. Plated options are 14 bright nickel, 15 satin nickel, 20D dark statuary bronze lacquered, 26 bright chrome and 26D satin chrome. There are also two powder coats, BSP black suede and WSP white suede. If you are matching existing openings in a commercial building, 26D is the usual standard.
23) Is there an antimicrobial version of the Sargent 7G37 for a healthcare corridor?
Yes, the 7 Line locks are offered with Microshield antimicrobial coating for hospitals, clinics and schools where the lever is a touched surface on every pass. It is a coating option on the lock rather than a different chassis, so the classroom function, grade and door prep stay the same.
24) Is a dummy lever an acceptable match for a classroom lever on the inactive leaf of a pair?
A dummy trim is the right part for an inactive leaf, but it does not latch or lock. The BEST 7KC single dummy trim lever is a Grade 2 non-keyed medium duty dummy, and the BEST 9K 1DT is the Grade 1 heavy duty non-keyed equivalent; the Accentra 455LN Augusta is a Grade 1 single dummy from the 5400 Series. The Sargent 7G37 is a keyed classroom lock and belongs on the active leaf. Pair the dummy to the active lock by finish - the 7G37 lever comes in finishes including 26D satin chromium and 10B oil rubbed bronze - so the two leaves read as a set.
25) Can a residential grade lever be substituted for a commercial classroom lever in an apartment building corridor?
Residential leversets such as the Kwikset 200BRNL Breton passage (Grade 3, 1-3/8 inch to 1-3/4 inch doors), the Kwikset 300BRNL Breton privacy (Grade 3), or the Callan Asheville passage lever (Grade 3) are built for interior unit doors, not for a keyed corridor opening. The Sargent 7G37 is a commercial Grade 2 classroom lock with a lever handle. On a corridor or common area door with traffic and a master key system, the commercial lock is the one that carries the cycle and function requirement.
26) How does the Sargent 7G37 compare to the Accentra 5301LN and 4601LN cylindrical levers?
The Accentra 5301LN Augusta (5300 Series) and the Accentra 4601LN with Augusta trim (4600 Series) are both Grade 2 cylindrical lever locks in passage/hall/closet function - they latch the door and have no cylinder. The Sargent 7G37 is a Grade 2 cylindrical lever in classroom function with a single cylinder, keyed on the outside. Same grade and same bored lock family, different job: use the Accentra passage levers on doors that only need to latch, and the 7G37 where the door has to be locked by key.
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Can I return it if it doesn’t work for me?
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Does the Sargent 28LC-7G37 LB 26D come with a warranty?
Absolutely. The Sargent 28LC-7G37 LB 26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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