Sargent 11G05 T-Zone Grade 1 E...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,071.23
$600.03
SGT-11G05

Sargent 11G05 T-Zone Grade 1 Entry/Office Single Cylinder Cylindrical Lock

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Model: 28-11G05 LB 26D
From the 11 Line Series Collection
$1,071.23
$600.03
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,071.23
$600.03
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Sargent T-Zone Grade 1 Entry/Office Cylindrical Lock with 2 3/4" Backset

Professional-Grade Cylindrical Lock with Modular Design

The Sargent T-Zone 11 Line Series cylindrical lock delivers Grade 1 performance with modular design for easy field function changes. This entry/office lock features 2 3/4" standard backset, 1 3/4" minimum door thickness, and non-handed installation for standard 161 door prep. UL cycle testing verified 7.6 million cycles (Verification ID: V584148) with T-Zone construction preventing lock twisting. Integrates with SARGENT key systems including Degree and Signature, plus SFIC, Schlage, and Medeco LFIC cylinders.

Professional Features & Benefits

  • Door Thickness Compatibility: Accommodates 1 3/4" to 2 1/2" door thickness with 2 3/4" to 5" backset options for versatile installation requirements.
  • Exceptional Durability: UL cycle testing completed at 7.6 million cycles (Verification ID: V584148) for lifetime facility performance and reliability in high-traffic applications.
  • Modular Design: Easy function changes in the field with one lockbody for multiple functions, simplifying facility maintenance and reducing inventory requirements.
  • T-Zone Construction: Torque-resistant design prevents lock twisting and eliminates through bolts or surface screws for secure installation and enhanced security.
  • Universal Key System Integration: Accepts SARGENT key systems including Degree and Signature, plus SFIC, Schlage, and Medeco LFIC for flexible master keying options.
  • Standard Door Preparation: Fits standard 161 door prep with non-handed design for simplified installation and reduced field preparation time.
  • Sustainable Construction: Made from 68% post-consumer recycled content meeting LEED MR credit 4 requirements for green building certification projects.
  • Manufacturer Warranty: 10-year limited warranty provides long-term protection and confidence in demanding 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 3/4" to 2 1/2"), standard 161 prep, and 2 3/4" to 5" backset compatibility.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for non-handed installation.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions for cylindrical lock installation.
  4. Install all mounting hardware and secure the lock to door per manufacturer torque specifications, ensuring T-Zone construction alignment prevents twisting.
  5. Install cylinder and configure for desired key system integration (SARGENT Degree, Signature, SFIC, Schlage, or Medeco LFIC as applicable).
  6. Test lock operation to verify proper function, latchbolt throw, and make final adjustments as needed. Refer to manufacturer documentation for complete installation details 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

Microshield Anti-Microbial Option

Microshield coating available as an option to supplement cleaning protocols for healthier environments in healthcare, educational, and high-traffic commercial applications where enhanced hygiene protection is required.

Why Choose Sargent Quality?

Sargent T-Zone cylindrical locks deliver professional-grade reliability with independently-verified 7.6 million cycle testing and Grade 1 ANSI/BHMA certification for demanding commercial applications. The 10-year limited warranty and sustainable construction with 68% post-consumer recycled content demonstrate long-term value and environmental responsibility. Engineered for facilities where dependable performance, flexible key system integration, and modular design adaptability are essential for ongoing operational efficiency.

Product Specs

Series:
11 Line Series
Grade:
Grade 1
Keyed Function:
Single Cylinder
ANSI/BHMA:
F109
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Subcategory:
Bored Locksets
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Lock Function:
Entrance/Office
Product Type:
Leversets
Duty Level:
Heavy Duty
Handle Type:
Lever
Product Attribute:
Cylindrical Locks
Product Function:
Entrance/Office
Door Hand Direction:
Non-Handed
Product Category:
Mechanical Locks
Collection:
11 Line Series
Department:
Door Hardware

Sargent 28-11G05 LB 26D – Frequently Asked Questions

1) What does the Sargent 11G05 entry/office function actually do at the door?
Entrance/office is the function where the outside lever can be locked and unlocked by key, and the inside lever always retracts the latch for free egress. It's the standard office door lock: staff key in, the door can be left unlocked during business hours and secured at close. ANSI/BHMA function designation is F109, and it is a single-cylinder keyed lock, so there's one keyed side.
2) Can the Sargent 11G05 be keyed into my existing Schlage or SFIC master key system?
Yes, and the cylinder is something you specify on the order. Options are a 6 pin standard cylinder, 60 Sargent large format interchangeable core (FSIC), 70 Sargent small format interchangeable core (SFIC), or 30 Schlage key-in-lever cylinder prep supplied less core so you can drop in your own Schlage core. The lock also works with SARGENT key systems including Degree and Signature, plus Medeco LFIC. Keying is a separate choice: standard keying, KD keyed different, KA keyed alike, or MK master keying, across 41 keyways with LA as standard.
3) Will the Sargent 11G05 work on a 1-3/8 inch interior door?
No. The 11 Line starts at 1-3/4 inch minimum door thickness and runs up to 2-1/2 inch, so a 1-3/8 inch door, the common older interior thickness, is below its range. For that door, look at a lever lock whose stated range starts at 1-3/8 inch: the Dexter C1000 entry/office covers 1-3/8 to 1-3/4 inch at Grade 1, and the Falcon K101 spans 1-3/8 to 2-1/4 inch, also Grade 1, though in passage function.
4) What is the closest Grade 1 entry/office cylindrical lever lock to the Sargent 11G05 from another manufacturer?
The Dexter C1000 Series entry/office lever lock is the nearest match on the two things that define the opening: it is a Grade 1 cylindrical lever lock with an entrance/office function, the same grade and function the Sargent 11G05 carries. The Dexter C1000 entry/office lock is a clutching design and covers doors 1-3/8 inch to 1-3/4 inch thick, while the Sargent 11G05 is non-handed and heavy duty. Confirm keyway and cylinder format separately, since the 11G05 is ordered with a specific cylinder prep and the Dexter is a different key system.
5) Is there a lighter-duty entry/office lever lock than the Sargent 11G05 for lower-traffic doors?
The Falcon B511CP6D is a Grade 2 medium duty cylindrical lever lock with an entry/office function, the same function as the Sargent 11G05 at a lower grade and duty level. The Sargent 11G05 is Grade 1 and heavy duty. On interior office doors that see modest daily use the Grade 2 medium duty B511CP6D covers the same locking behavior; on high-cycle openings the Grade 1 heavy duty rating is the reason to stay with the 11G05.
6) What entry/office lever lock should I use on a 1-3/8 inch door instead of the Sargent 11G05?
The Sargent 11G05 starts at 1-3/4 inch minimum door thickness, so a 1-3/8 inch leaf needs a different lock. The Cal-Royal AUS00 is an entrance/office lever lock rated for 1-3/8 inch to 1-3/4 inch doors, and the Dexter C1000 entry/office lever covers the same 1-3/8 inch to 1-3/4 inch range at Grade 1. The Cal-Royal AUS00 is Grade 3 with a solid brass forged body, so match the grade to the traffic on the opening.
7) I need a storeroom lock to go with the Sargent 11G05 on the same corridor. What are my options?
The 11G05 is an entrance/office function, which is unlocked and relocked from the inside, so it is the wrong function for a storeroom that must stay locked at all times. The Cal-Royal AG05 is a Grade 2 storeroom lever lockset with a deadlocking latchbolt for doors 1-3/8 inch to 1-3/4 inch thick, and the Hager 2580 is a Grade 2 storeroom cylindrical lock with a Withnell lever for doors 1-3/8 inch to 2 inch. Both are Grade 2 while the 11G05 is Grade 1, so a facility standardizing on Grade 1 throughout should specify the storeroom function within a Grade 1 line instead.
8) Which lock do I order for a classroom door if the offices are getting Sargent 11G05 units?
A classroom door needs a classroom function, not the entrance/office function the Sargent 11G05 carries. The Dexter C1000 classroom lever lock is a Grade 1 clutching keyed lock for doors 1-3/8 inch to 1-3/4 inch, and the Dexter C1000 classroom security version adds inside key control for lockdown at the same Grade 1 rating. The Cal-Royal AG03 is a Grade 2 classroom lever with a 6-pin Schlage C keyway and 2-3/4 inch backset, which matches the 2-3/4 inch backset the 11G05 is offered in.
9) What should I specify instead of the Sargent 11G05 on an access-controlled door?
The 11G05 is a mechanical key-operated lock with no electrified option. For a door tied to an access control system, the Corbin Russwin CL33903 is a Grade 1 electrified cylindrical lever lock, fail safe, 12VAC/DC, for doors 1-3/4 inch to 2 inch thick. It holds the same Grade 1 rating as the 11G05 and covers a door thickness range the 11G05 also starts at. Fail safe means the lever unlocks on power loss, so confirm that behavior suits the egress and security requirements for the opening.
10) For a facility standardizing on one keyway, how does the Sargent 11G05 compare with locks that ship on a Schlage C keyway?
The Sargent 11G05 is ordered with a choice of cylinder prep including a 6-pin standard cylinder, Sargent large format interchangeable core, Sargent small format interchangeable core, and a Schlage key-in-lever cylinder prep supplied less core, so it can be brought onto an existing Schlage system without changing lock lines. Among the alternatives, the Cal-Royal AG00 entrance lever and the Cal-Royal AG03 classroom lever come with 6-pin Schlage C keyway cylinders keyed different, and the Arrow MK33-BD-CS uses a conventional Schlage C keyway. Confirm whether cores are supplied or the prep is less core before pricing the keying work.
11) Which Grade 1 alternative to the Sargent 11G05 works on a door thicker than 2 inches?
The Sargent 11G05 accommodates 1-3/4 inch to 2-1/2 inch door thickness, which is the widest reach among the Grade 1 cylindrical levers here. Falcon K101 covers 1-3/8 inch to 2-1/4 inch at Grade 1 heavy duty, and Corbin Russwin CL3110 covers 1-3/4 inch to 2 inch, but both are passage function rather than the keyed entrance/office function of the 11G05. For a thick keyed commercial door, the 11G05 is the one that spans the range.
12) Is a Grade 1 cylindrical lock like the Sargent 11 Line worth it over a Grade 2 lever for an office door?
It comes down to traffic. The 11G05 is Grade 1 heavy duty with UL cycle testing at 7.6 million cycles (Verification ID V584148), which is the class you want on a main office, corridor or tenant entrance that swings hundreds of times a day. For a lower-traffic interior office, a Grade 2 entry/office lever such as the Falcon B511CP6D or the Hager 2525 entrance lock covers the same function at medium duty. Where a facility is standardizing on one keyway across every opening, the Grade 1 body plus the modular function change is what keeps the inventory small.
13) If I need to change a Sargent 11 Line lock from office to storeroom later, do I have to buy a whole new lock?
No. The 11 Line lockbody is modular, so functions change in the field from one body rather than stocking a separate lock per function. For a maintenance shop that means fewer part numbers on the shelf and a function swap instead of a replacement when a room's use changes. T-Zone construction also means no through bolts or surface screws, so the lock resists twisting without the exposed fasteners a torque attack goes after.
14) What lever and rose styles does the Sargent 11G05 come in, and will they match the other doors in my building?
Four lever designs (B, J, L and P) and four roses: B at 2-3/4 inch, O at 2-3/4 inch, L at 3-1/8 inch, and E at 3-1/2 inch. Rose diameter is the one to check if you're replacing an older lock, because a larger rose covers scars and paint rings a smaller one leaves showing. Fourteen finishes are offered, from 26D satin chrome and 15 satin nickel through 10B oil rubbed bronze and BSP black or WSP white suede powder coat, so matching an existing fleet of openings is usually a case of ordering the same lever, rose and finish code across the run.
15) I have Sargent 11 Line locks on my office doors and need matching passage and classroom levers. What else pairs with them?
Stay in the 11 Line for a visual and keyway match, since the same lever, rose and finish codes carry across the family and the body is modular between functions. Where a specific function has to come from elsewhere, the closest Grade 1 cylindrical peers by function are the Corbin Russwin CL3110 for passage/closet, which is fire rated, the Dexter C1000 classroom lever, and the Dexter C1000 asylum (F87) for utility and mechanical rooms. Those are different trim families, so the levers will not look identical to an 11 Line opening.
16) Can I use a passage lever lock in place of the Sargent 11G05?
No. The Sargent 11G05 is keyed with a single cylinder, so it locks; a passage lever has no cylinder and never locks. Grade 1 passage levers such as the Falcon K101, the Falcon T101, the Corbin Russwin CL3110 and the Design Hardware X75 match the 11G05 on grade but are non-keyed latching trim for doors that only need to stay closed. Use a passage lever on corridor and closet doors and keep the 11G05 where the door must be secured.
17) What is the difference between the Sargent 11G05 and a dummy lever like the BEST 9K 1DT?
The BEST 9K Series 1DT is single dummy trim: a Grade 1 heavy duty non-keyed lever that mounts to the door face with no latch and no cylinder, used on an inactive leaf or a pull-only door. The Sargent 11G05 is a keyed single-cylinder cylindrical lock with an entrance/office function. They share the Grade 1 heavy duty rating, but a dummy will not latch or lock a door. Order dummy trim only for the inactive side of a pair where the active leaf carries the working lock.
18) Is a Hager 2525 entry lever an equivalent to the Sargent 11G05?
They serve the same kind of opening but sit at different ratings. The Hager 2525 is a Grade 2 commercial cylindrical entry lock with a lever handle for doors 1-3/8 inch to 2 inch thick. The Sargent 11G05 is Grade 1 heavy duty with an entrance/office function and a 1-3/4 inch minimum door thickness. The Hager reaches thinner doors; the Sargent carries the higher grade and accepts SFIC, Schlage and Medeco LFIC cylinders for keying into an existing system.
19) Can a keypad lever set replace the Sargent 11G05 where we do not want to issue keys?
A mechanical keypad set removes keys from the equation but changes the function. The Lockey 1150 is a heavy duty mechanical keypad lever set with double combination in a passage function for doors 1-1/8 inch to 2 inch thick, and the Delaney LP250 is a Grade 2 electronic keypad leverlock. The Sargent 11G05 is a Grade 1 keyed single-cylinder entrance/office lock that integrates with SARGENT Degree and Signature key systems plus SFIC, Schlage and Medeco LFIC cylinders. If the door has to master key into an existing facility system, the keypad sets will not do it.
20) We need a lock on a patient room or utility door where the offices use the Sargent 11G05. What function applies?
That opening calls for an asylum or institution function rather than the entrance/office function on the 11G05, because it is keyed on both sides with no free egress by lever. The Dexter C1000 asylum lock is a Grade 1 F87 cylindrical lock for doors 1-3/8 inch to 2 inch thick, matching the Grade 1 rating of the 11G05. The Arrow MK33-BD-CS is a heavy duty asylum lock with a ball knob and a conventional Schlage C keyway, which is a knob rather than the lever trim the 11G05 uses.
21) Is a residential entry lever such as the Deltana 6201 Manchester interchangeable with the Sargent 11G05?
They are built for different service. The Deltana 6201 Manchester is an entry lever for doors 1-3/8 inch to 2 inch thick, and the Deltana 6411 Morant and 6431 Linstead cover the same 1-3/8 inch to 2 inch range. The Sargent 11G05 is a commercial Grade 1 heavy duty cylindrical lock with a 1-3/4 inch minimum door thickness and non-handed installation for standard 161 door prep. On a commercial opening specified to ANSI/BHMA Grade 1, the decorative entry levers do not meet the spec.
22) Does the Accentra 107S Schlage cylinder adapter kit work with the Sargent 11G05?
No. The Accentra 107S is a Schlage cylinder adapter kit for Yale hardware, so it addresses cylinder fitment in Yale locks rather than Sargent bodies. The Sargent 11G05 handles the same need natively: it is ordered with a Schlage key-in-lever cylinder prep supplied less core, and also accepts SARGENT Degree and Signature key systems, SFIC, and Medeco LFIC cylinders. Specify the cylinder prep on the lock rather than adapting one afterward.
23) What privacy lock pairs with a Sargent 11G05 for restrooms on the same floor?
Privacy is a separate function from the entrance/office function of the 11G05, since a privacy set locks from inside with no key. The Arrow MK02-TA is a fire rated privacy cylindrical lock with a Tudor knob, non-keyed, for doors 1-3/4 inch to 2 inch thick, and the Hager 2540 is a Grade 2 privacy cylindrical lock with a Withnell lever for doors 1-3/8 inch to 2 inch. The Arrow uses knob trim while the 11G05 uses a lever, so where ADA lever operation is required across the facility the lever version is the one to specify.
24) Is there an anti-microbial option on the Sargent 11 Line lever for a healthcare corridor?
Microshield coating is available as an option on the 11 Line and is meant to supplement, not replace, a cleaning protocol. It's the usual specification on patient wings, clinics and school corridors where the lever is a high-touch surface. The lock body itself is built with 68 percent post-consumer recycled content, which counts toward LEED MR credit 4 if the project is chasing certification.
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Does the Sargent 28-11G05 LB 26D come with a warranty?
Absolutely. The Sargent 28-11G05 LB 26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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