Sargent 8225 Heavy Duty Mortis...
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$1,773.66
$1,189.31
Sargent Sargent 8200 Series - (8225) Dormitory or Exit Function Rose Trim, Heavy Duty Single Cylinder with Deadbolt Mortise Lock, Grade 1 SGT-8225

Sargent 8225 Heavy Duty Mortise Lock with Deadbolt - Dormitory/Exit Function Rose Trim - Grade 1 Commercial Security

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Model: 8225 EA 26D
From the 8200 Series Collection
$1,773.66
$1,189.31
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,773.66
$1,189.31
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Sargent 8225 Heavy Duty Mortise Lock with Deadbolt - Dormitory/Exit Function with 2 3/4" Backset - Grade 1 Commercial

Industry Benchmark Mortise Lock with Maximum Security and Performance

The Sargent 8225 heavy duty mortise lock represents the industry benchmark for commercial security hardware, delivering maximum security, performance, and durability through high-quality components. This single cylinder mortise lock features a 2 3/4" backset, 3/4" latchbolt throw, and accommodates 1 3/4" door thickness with field reversible handing. The multi-functional lock body integrates with all SARGENT key systems including Degree, Signature, KESO, and XC, while exceeding ANSI/BHMA A156.13 Series 1000 Grade 1 requirements and UL 10C 3-hour fire rating certification.

Professional Features & Benefits

  • Exceptional Durability Testing: UL Cycle Above and Beyond test completed at 16 million cycles (Verification ID: V584148) for unmatched reliability in high-traffic commercial applications.
  • Heavy-Duty Construction: Robust lever-style mortise lock with patented design and construction engineered to far exceed independently verified testing standards.
  • Precise Dimensions: 2 3/4" backset with 3/4" latchbolt throw designed for 1 3/4" door thickness applications with field reversible handing capability.
  • Universal Key System Integration: Compatible with all SARGENT key systems (Degree, Signature, KESO, and XC) providing maximum flexibility for master key applications.
  • EcoFlex Energy Technology: Electromechanical version operates from 12 to 24VDC with EcoFlex technology reducing power consumption up to 96% for sustainable operation.
  • Multi-Functional Design: Available in 56 different functions including electromechanical, security and monitoring options with on-site function switching capability.
  • Comprehensive Fire Rating: UL-cUL Fire-Rated up to 3 hours with UL 10C positive pressure certification for critical fire safety applications.
  • Professional Grade Certifications: ANSI/BHMA A156.13 Series 1000 Grade 1, ADA compliant, and NFPA 80 compliant for code compliance assurance.
  • Extended Warranty Coverage: 10-year limited warranty with 2-year coverage on electrical components for long-term protection and confidence.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Verify electrical requirements match available power supply. Confirm voltage (12 to 24VDC) and current capacity before proceeding.
  2. Disconnect power supply before beginning installation. Follow all applicable electrical codes and safety procedures.
  3. Mount the unit in the specified location ensuring adequate clearance for wiring access, ventilation, and future service requirements.
  4. Route and connect wiring according to manufacturer wiring diagrams. Use appropriate wire gauge and connectors for the application.
  5. Configure operational settings including any configurable options per application requirements.
  6. Restore power and test all functions including normal operation, alarm/alert functions, and integration with connected systems.
  7. Complete final inspection and document settings. Refer to manufacturer documentation for complete wiring diagrams, programming instructions, and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities
  • Emergency Exit Compliance

Why Choose Sargent Quality?

Sargent mortise locks deliver professional-grade reliability with patented design and construction rated for 16 million cycles in 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 Grade 1 ANSI/BHMA standards and 3-hour fire rating, this lock represents the strongest and most durable mortise lock solution where dependable performance and maximum security are essential.

Manufacturer Resources

SARGENT Full Line Catalog

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:
Dormitory/Exit
Product Type:
Mortise Locks
Duty Level:
Heavy Duty
Handle Type:
Lever
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Apartment/Dormitory
Product Category:
Mechanical Locks
Collection:
8200 Series
Department:
Door Hardware

Sargent 8225 EA 26D – Frequently Asked Questions

1) Will the Sargent 8225 mortise lock fit a 1-3/4 inch door?
That's exactly what the 8225 is built for. The lock body is set up for 1-3/4 inch door thickness with a 2-3/4 inch backset, which is the standard commercial mortise backset. Handing is field reversible, so one lock covers left and right hand openings and you don't have to specify hand when you order.
2) What does dormitory/exit function mean on a Sargent 8225 mortise lock, and is it right for an apartment door?
Dormitory/exit is the apartment-style function: the outside lever is locked or unlocked by key, the deadbolt is thrown by key from outside or by an inside turn, and the inside lever always retracts both the latch and deadbolt for free egress. That's why it gets specified on dorm rooms and multi-family unit entry doors. It's a single cylinder lock, so keyed outside only. If you want a door that stays locked outside at all times and never unlocks with the key, a storeroom function like the Cal-Royal NM8080 or the Accentra 8805FL is the function to look at instead.
3) Can I use the Sargent 8225 on a 3-hour fire rated door?
Yes. The 8225 is UL-cUL fire rated up to 3 hours with UL 10C positive pressure certification, and it's listed as NFPA 80 compliant. It also meets ANSI/BHMA A156.13 Series 1000 Grade 1 and is ADA compliant, which is the combination most institutional specs call for on a rated opening.
4) Will the Sargent 8225 latch into the strike that's already in my frame?
The 8225 throws a 3/4 inch latchbolt from a 2-3/4 inch backset lock body, so if the opening currently has a standard ANSI mortise lock prep and strike, the latch geometry lines up. What decides it is the strike cutout: this lock carries a deadbolt as well as the latch, so the frame needs a strike with the deadbolt pocket. Swapping in from a latch-only mortise lock means a new strike and a deeper frame prep.
5) What do I have to specify when ordering a Sargent 8225 mortise lock?
Four choices settle the order. Cylinder: standard cylinder, LC less cylinder, 70 for small format interchangeable core prep less core, or 60 for large format IC prep less core. Keying: keyed different, keyed alike, or to a key code (pick None if you went less cylinder). Lever: A, B, E, F, J, L, P, or W. Rose: E at 3-1/16 inch, L at 3-1/2 inch, LN at 2 inch, or O at 2-3/4 inch. Then the finish.
6) Can I order the Sargent 8225 to work on my existing master key system?
The 8225 lock body works with all SARGENT key systems, including Degree, Signature, KESO and XC, so it drops into an existing Sargent masterkey plan. If your building runs somebody else's cores, order it with the 70 prep for small format interchangeable core or the 60 prep for large format IC, both supplied less core, and pin your own cores into it. LC (less cylinder) is there if you're supplying a complete conventional cylinder yourself.
7) My door is thicker than 1-3/4 inches. Can I still use a Sargent 8225?
No. The 8225 is set up for 1-3/4 inch door thickness. For a thicker leaf, the Hager 3800 Series Grade 1 mortise locks cover 1-3/4 to 2-1/2 inches (the 3810S with rose trim, the 3810E with escutcheon, both on a 2-3/4 inch backset), and the Baldwin 6301 apartment-function mortise body is listed for 1-3/4 inch and over on a 2-1/2 inch backset. Note the Baldwin runs the shallower backset, so the door prep is not the same.
8) What is the closest Grade 1 mortise equivalent to the Sargent 8225 from another manufacturer?
The Sargent 8225 is a Grade 1 heavy duty mortise lock in the 8200 Series, single cylinder with deadbolt, set up for Dormitory/Exit function on a 2 3/4 inch backset with a 3/4 inch latchbolt throw and 1 3/4 inch door thickness, UL 10C fire rated to 3 hours. For a comparable Grade 1 mortise body from another line, the Corbin Russwin ML2003 in the ML2000 Series is a Grade 1 mortise lockset for 1 3/4 inch doors, though it is built as a classroom function rather than dormitory/exit. Cal-Royal also builds the NM8050 Office/Entrance and NM8080 Storeroom as Grade 1 heavy duty mortise locksets for 1 3/4 inch doors. Match on function first: dormitory/exit locks the outside lever by turning the inside thumbturn or key, and a storeroom or classroom lock does not behave that way.
9) I need a mortise lock for a storeroom, not a dorm room. What should I use instead of the 8225?
The 8225 is a Dormitory/Exit function lock, which means the outside lever is locked and unlocked deliberately and egress is always free from inside. A storeroom function keeps the outside lever locked at all times and retracts the latch only by key. For that behavior, the Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series with an Arcadia lever, and the Cal-Royal NM8080 is a Grade 1 heavy duty storeroom mortise lockset for 1 3/4 inch doors with an interchangeable core option. The Baldwin 6310 is also an entrance/storeroom mortise lock body, on a 2 1/2 inch backset for doors 1 3/8 inch and over, so verify the backset against the door prep before ordering it as a swap.
10) We want keypad or credential access on the dorm doors. What replaces a mechanical mortise lock like the 8225?
The 8225 as ordered is a mechanical lock, not electronic. For credential access on the same mortise prep, the Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes and classroom function for doors 1 5/8 to 1 7/8 inches, and the DL2700CR is a Grade 1 Trilogy T2 electronic mortise lock with classroom function and weatherproof construction for the same door thickness range. The Schlage CO-100 is a Grade 1 standalone electronic mortise lock with a keypad reader in a privacy function for 1 3/4 inch doors. On the RFID side, TownSteel builds the FME-2000 as a Grade 1 heavy duty classroom mortise lockset with RFID for 1 3/4 inch doors. Note the door thickness ranges differ across these, so confirm the leaf before you commit.
11) Which mortise locks look like a substitute for the 8225 but are not?
Several mortise-labeled parts will not do the job of a keyed dormitory/exit lock. The Emtek 3019 Brisbane, 3102 Memphis, 3104 Hamilton and 3106 Manhattan mortise entrance locksets are dummy function, meaning fixed trim with no latch operation at all. The Schlage L0170 is a Grade 1 half dummy trim for 1 3/4 inch doors, also non-operating. The Falcon MESC600DT is a dummy escutcheon lever trim built for M9900 Series exit devices, not a lock body. The Marks USA 5PDN is a Grade 1 hospital passage push/pull paddleset, ligature resistant and ADA compliant in satin stainless, which passes rather than locks. And the Schlage PC10 is a Grade 1 passage lock for 1 3/4 inch doors but it is cylindrical, not mortise, so it will not fit a mortise pocket.
12) Is a 2-1/2 inch backset Baldwin mortise lock a drop-in for a 2-3/4 inch backset Sargent?
No. The 8225 is built on a 2 3/4 inch backset and the Baldwin 6301 entry/apartment and 6310 entrance/storeroom mortise lock bodies are 2 1/2 inch backset, so the cylinder and spindle centers land a quarter inch closer to the door edge and the existing prep will not line up. The Baldwin 6301 is offered knob by knob and the 6301LS lever by lever, both entrance/apartment function for doors 1 3/4 inch and over. If you are matching an existing 2 3/4 inch mortise pocket, stay with a 2 3/4 inch backset body such as the Hager 3800 Series locks, which are built on a 2 3/4 inch backset.
13) We need an access-controlled opening with request-to-exit and electric lever control. What handles that instead of the 8225?
The 8225 is a mechanical lock and does not provide electric lever control or monitoring outputs. The Schlage L9092EU mortise lock is a heavy duty electric lock/unlock outside lever in corridor function, keyed outside, with request to exit and 12/24VDC operation, for 1 3/4 inch doors. The Command Access ML190 Series is a heavy-duty motorized mortise lock with field selectable EL/EU operation, storeroom function, on 24VDC. BEST offers the 45HW Series as a heavy duty wired electromechanical mortise lock with 12V/24V operation. All three tie into an access control panel, which the mechanical 8225 does not.
14) The opening is a behavioral health or detention room. Is the 8225 the right lock?
The 8225 uses standard lever trim in a choice of eight lever styles, which is not suitable where ligature resistance is required. TownSteel builds the MRX-L-01 as a Grade 1 heavy duty anti-ligature lever mortise lockset in stainless steel with passage function for 1 3/4 inch doors, and the MRX-A-01 as a satin stainless ligature resistant arch trim mortise lockset, also Grade 1 heavy duty passage for 1 3/4 inch doors. The Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset, ligature resistant and ADA compliant in satin stainless. Those are passage function, so pair them with the locking scheme the facility requires.
15) Does a Grade 2 electronic mortise lock cover the same openings as the Sargent 8225?
Not on a spec that calls for Grade 1. The 8225 is Grade 1, exceeding ANSI/BHMA A156.13 Series 1000, with UL-cUL fire rating up to 3 hours. The Schlage LEBMB-ADD mobile-enabled mortise lock with push button and LED covers privacy, office and apartment functions for 1 3/4 inch doors with a 3 hour fire rating, but it is Grade 2. The Dormakaba Saffire LX-I-M002 electronic RFID mortise lockset with BLE mobile access is BHMA Grade 2 as well. If the drawing calls Grade 1 and you want a wireless credential lock, the Schlage LEMD-GRW in the ENGAGE Series is Grade 1 with a 3 hour fire rating, a 125kHz proximity reader and Greenwich trim, right hand.
16) Our doors are narrow stile aluminum storefront. Can we use the 8225?
No. The 8225 is built for 1 3/4 inch wood or hollow metal doors with a 2 3/4 inch backset and a 3/4 inch latchbolt throw, which is not a storefront prep. The Alarm Lock DL1300NW Trilogy Networx wireless electronic mortise lock with keypad is made for Adams Rite deadlatches, which is the standard storefront application. The Dormakaba E-Plex 2066 electronic pushbutton keyless mortise lock is a wide stile product, and the Kaba Ilco BR Series is a glass door bottom rail lock for all-glass openings. Confirm the stile width and the existing deadlatch before ordering any of them.
17) Is the Sargent 8225 an electronic lock, and can I get an access control version?
No, the 8225 as ordered is a mechanical lock, key and lever only, no electronics. The 8200 platform does have an electromechanical version running 12 to 24VDC with EcoFlex, but that's a different order. If you're putting card or keypad access on the opening, look at the Schlage CO-100 standalone mortise lock with keypad reader, the TownSteel FME-2000 Grade 1 RFID mortise lockset, or the BEST 45HW wired electromechanical mortise lock with 12V/24V operation.
18) How does the Sargent 8225 hold up on a high traffic door like a dorm or apartment corridor?
It's rated heavy duty and completed UL's Cycle Above and Beyond test at 16 million cycles under verification ID V584148. Grade 1 under ANSI/BHMA A156.13 already sets the commercial durability bar; 16 million cycles is well past it. That's the number to quote when a spec asks you to justify the lock on a high-use opening.
19) What's the difference between the Sargent 8225 and a Corbin Russwin ML2003 or a Cal-Royal NM8050 mortise lock?
All three are Grade 1 mortise locksets for 1-3/4 inch doors, but they are different functions. The 8225 is dormitory/exit with a deadbolt, for apartment and dorm unit doors. The Corbin Russwin ML2003 is a classroom function lockset from the ML2000 Series. The Cal-Royal NM8050 is office/entrance with an auxiliary deadlatch rather than a deadbolt. Pick on function first, since that decides how the door behaves, then on keyway.
20) Which rose size should I pick on a Sargent 8225 to cover the marks left by the old trim?
Four rose sizes are offered: LN at 2 inches (51mm), O at 2-3/4 inches (67mm), E at 3-1/16 inches (78mm), and L at 3-1/2 inches (89mm). On a retrofit, measure the ring of wear or paint shadow around the old trim and pick the rose that covers it, largest is L at 3-1/2 inches. On new doors the choice is aesthetic. This is rose trim, not escutcheon, so it won't hide a full plate footprint from an escutcheon lock.
21) Does the Sargent 8225 come with the lever, or do I order trim separately?
The lever is part of the order, not a separate line. You choose one of eight lever designs (A, B, E, F, J, L, P, W) and one of four rose sizes when you configure the lock. It's a lever product, so it's ADA compliant out of the box, unlike a knob trim. What you do need to decide separately is the cylinder: if you pick LC, 60 or 70, no cylinder or core ships with the lock and you supply it.
22) Can one Sargent 8225 mortise lock work on both left and right hand doors?
Handing isn't a problem here. The 8225 is field reversible, so the same lock handles a left or right hand opening and the change is made on site with no extra parts. For a property manager buying a batch of unit locks across a building, that means one part number for every door instead of splitting the order by hand.
23) The door does not need a key, just latching. Is there a simpler mortise lock than the 8225?
The 8225 is a keyed single cylinder lock with a deadbolt, which is more hardware than a corridor or closet door needs. For a non-keyed mortise opening, the Schlage PM010 is a Grade 1 passage latch mortise lock, non-keyed, for 1 3/4 inch doors, and the Falcon MA101 in the MA Series is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating. Hager builds the 3810S passage mortise lock with a rose on a 2 3/4 inch backset and the 3810E with an escutcheon, both for doors 1 3/4 to 2 1/2 inches. If the room needs a thumbturn but no key, the Hager 3840S is a privacy mortise lock on a 2 3/4 inch backset for 1 3/4 to 2 inch doors, and the Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with a deadbolt for 1 3/4 inch doors.
24) The 8225 has a deadbolt. If all I want is the deadbolt, what else is there?
The 8225 pairs a latch and a deadbolt in one mortise body with lever trim, so removing the lever function means moving to a different product entirely. The Kaba Ilco 185 Series is a deadbolt-function mortise lock with no handing, sold in a single pack, which suits an opening where the latching is handled by other hardware. The Alarm Lock DL4500 is a Grade 1 electronic mortise deadbolt with 2,000 user codes and a privacy keypad for doors 1 5/8 to 1 7/8 inches if the deadbolt itself needs to be code-operated. Neither of those gives you the lever-operated latch the 8225 provides, so they are additions to a latching opening, not drop-in replacements.
25) What is the difference between ordering the 8225 and ordering a bare mortise lock body like the BEST 45H?
The 8225 ships as a complete lever lockset: you select the lever style from A, B, E, F, J, L, P and W, the rose from E at 3 1/16 inch, L at 3 1/2 inch, LN at 2 inch or O at 2 3/4 inch, and the finish, along with cylinder and keying options. The BEST 45H is sold as a heavy duty mortise lock body in public entrance function with field reversible operation, and the 45HCA with intruder function is likewise a lockbody, so trim is specified separately. That matters when you are standardizing lever style across a building, and it matters for what actually arrives on the jobsite.
26) If we standardize on interchangeable cores, does the 8225 still work or do we need a different lock?
The 8225 covers interchangeable core prep directly: cylinder options include 70 for small format interchangeable prep less core and 60 for large format interchangeable prep less core, alongside a standard cylinder and an LC less cylinder option, and the lock body works with all SARGENT key systems including Degree, Signature, KESO and XC. If you are comparing against another line for the same reason, the Cal-Royal NM8080 is a Grade 1 heavy duty storeroom mortise lockset offered with an interchangeable core option, and the BEST 45H heavy duty mortise lock body is the usual choice where a BEST core standard is already in place.
27) Is a medium duty mortise latch an acceptable stand-in for the 8225 on a high traffic door?
The 8225 is a heavy duty Grade 1 commercial lock tested to 16 million cycles in UL Cycle Above and Beyond testing, which is what carries a high traffic opening. The Codelocks CL2255 in the CL2000 Series is a medium duty electronic tubular mortise latch in brushed steel, a different duty class intended for lighter service. If the traffic is heavy but you want electronic credentials, stay in the heavy duty band with the BEST 45HW wired electromechanical mortise lock or the TownSteel FME-4000, a Grade 1 heavy duty electronic intruder classroom mortise lockset with RFID for 1 3/4 inch doors.
28) I'm standardizing lock finishes across a building. What finishes does the Sargent 8225 come in?
Sixteen, covering most existing building standards: 03 bright brass, 04 satin brass, 09 bright bronze, 10 satin bronze, 10B oil rubbed dark oxidized satin bronze, 10BE and 10BL dark oxidized satin bronze, 14 bright nickel, 15 satin nickel, 20D dark statuary bronze, 26 bright chrome, 26D satin chrome, 32 bright stainless, 32D satin stainless, plus BSP black and WSP white suede powder coat. 26D and 32D are the two that match most existing commercial openings.
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Does the Sargent 8225 EA 26D come with a warranty?
Absolutely. The Sargent 8225 EA 26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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