Corbin Russwin ML2082 Grade 1 ...
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$1,026.55
Corbin Russwin Corbin Russwin ML2082 Dormitory or Exit - Mortise Lock, Double Cylinder with Deadbolt COR-ML2082-KEYED

Corbin Russwin ML2082 Grade 1 Dormitory or Exit - Mortise Lock, Double Cylinder with Deadbolt

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Model: COR-ML2082-NSA-626
From the ML2000_Series Collection
$1,655.00
$1,026.55
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  • Corbin Russwin ADDER-CORBIN RUSSWIN-[KEYING]=KD - Keyed Different ADDER-CORBIN RUSSWIN-[KEYING]=KD - Keyed Different
  • Corbin Russwin ADDER-CORBIN RUSSWIN-[KEYING]=KA - Keyed Alike ADDER-CORBIN RUSSWIN-[KEYING]=KA - Keyed Alike

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Corbin Russwin ML2082-KEYED Dormitory/Exit Mortise Lock, Double Cylinder with Deadbolt, Grade 1

Commercial-Grade Dormitory/Exit Mortise Lock with Double Cylinder Security and Patented Quick Reversible Latchbolt

The Corbin Russwin ML2082-KEYED is a Grade 1 Dormitory/Exit Mortise Lock from the ML2000 Series, engineered for high-traffic commercial, institutional, industrial, and government applications. Designed for 1-3/4" (44mm) standard door thickness, this double cylinder mortise lock features a patented Quick Reversible latchbolt and a 1" stainless steel deadbolt, delivering both life safety and security in a single door preparation. Constructed of heavy-gauge steel and rated to ANSI function F11, the ML2082-KEYED is field reversible for flexible installation and backed by a 10-year limited warranty.

Professional Features & Benefits

  • ANSI/BHMA Grade 1 mortise lock per A156.13 Series 1000, Operational and Security Grade 1
  • UL Cycle above and beyond: 14.5 Million Cycles (Verification ID: V875753)
  • Patented Quick Reversible latchbolt — reverse handing without disassembling the lock case
  • Multi-function capability: 12 functions configurable from one ML2054 lockbody
  • Heavy-gauge steel lockcase 5-7/8" x 4" x 15/16"; 1" stainless steel deadbolt, 1" throw
  • 3/4" (19mm) throw anti-friction two-piece latchbolt requires less force to close
  • Wide variety of trim designs including Muséo®, Vineyard™, Behavioral Health (BHSS/BLSS)
  • Status indicator options for locked/unlocked visibility (sectional and escutcheon trim)
  • Motorized Electric Latch Retraction (MELR) available for ML20900 series
  • Thru-bolted trim designs for proper alignment and increased security
  • Can be used with new or existing Corbin Russwin key systems; accepts most other manufacturers' cylinders
  • UL/cUL listed, UL10C positive pressure; 3-hour fire door up to 4' x 10' single or 8' x 10' pair
  • Ten-year mechanical warranty; five-year MELR; two-year electrical

Technical Specifications

  • Grade: ANSI/BHMA A156.13 Series 1000, Operational and Security Grade 1
  • Handing: Handed; quick reversible — re-handed without disassembling the lock case
  • Door Thickness: 1-3/4" (44mm) standard; optional thicknesses available
  • Backset: 2-3/4" (70mm)
  • Lockcase: Heavy-gauge steel, 5-7/8" (149mm) x 4" (102mm) x 15/16" (24mm)
  • Armored Front: Wrought brass, bronze, or stainless steel, 8" x 1-1/4"
  • Latchbolt: 2-piece mechanical with anti-friction insert, 5/8" x 1" x 3/4" (19mm) throw
  • Auxiliary Latchbolt: 9/16" (14mm) effective throw; deadlocking
  • Deadbolt: One-piece stainless steel, 19/32" x 1-1/4" x 1" (25mm) throw
  • Strike: Wrought brass, bronze, or stainless steel, ANSI straight lip, 4-7/8" x 1-1/4" x 1-1/8" lip to center
  • Cylinder: Brass, 6-pin L4 keyway, 0-bitted standard
  • Spacing: C. to c. knob/lever to cylinder: 3-5/8" (92mm); knob/lever to thumbturn: 2-7/16" (62mm)
  • Certifications: ANSI/BHMA A156.13 Grade 1; UL/cUL UL10C 3-hour positive pressure; ADA A117.1; California State Fire Marshal; Windstorm/Hurricane certified
  • Warranty: Ten-year mechanical; five-year MELR; two-year electrical

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities and Dormitories
  • Healthcare Institutions and Hospitals
  • Hotels and Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities
  • Government and Municipal Buildings
  • Institutional and High-Security Environments

Tamper-Resistant Design

The ML2000VR (Vandal Resistant) Series option features stainless steel escutcheons with tapered edges and Torx® pin tamper-resistant screws, providing a vandal-resistant barrier for high-abuse environments. When paired with Corbin Russwin patented high-security Pyramid or Access 3® cylinders, the ML2082 becomes a formidable barrier against unauthorized entry.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locks deliver professional-grade reliability with heavy-gauge steel construction and a patented Quick Reversible latchbolt, rated to an extraordinary 14.5 Million Cycles in UL Cycle testing (Verification ID: V875753). Backed by a 10 Year Limited warranty and Grade 1 ANSI/BHMA certification to function F11, the ML2082-KEYED is engineered for the most demanding commercial applications where dependable performance and long-term security are essential.

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Grade:
Grade 1
Keyed Function:
Double Cylinder
Standard Cylinder:
Conventional 6-pin, L4 Keyway, 0 Bitted Keying
Standard Strike:
ANSI straight lip standard, 4-7/8" x 1-1/4" x 1-1/8"
Warranty:
10 Year Limited
ANSI/BHMA:
F11
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Keyed:
Yes
Latch Throw:
3/4" Latchbolt, 1" Deadbolt
Commercial/Residential:
Commercial
Function Description:
Latchbolt by grip either side, unless outside grip is locked by toggle-action stop or by projection of deadbolt. Deadbolt thrown by key from either side. Deadbolt and latchbolt retracted by outside key when outside grip locked.
Lock Type:
Mortise
Lock Function:
Dormitory/Exit
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
ML2082
Collection:
ML2000_Series
Product Function:
Corridor
Door Hand Direction:
Field Reversible
Door Thickness Range:
1-3/4"
Product Category:
Mechanical Locks
Product Substrate:
Brass or Bronze
Department:
Door Hardware

Corbin Russwin COR-ML2082-NSA-626 – Frequently Asked Questions

1) How does the ML2082 dormitory/exit function actually work on a dorm room or corridor door?
Grip on either side retracts the latchbolt, unless the outside grip is locked by the toggle-action stop or by throwing the deadbolt. The deadbolt is keyed from both sides (double cylinder), and when the outside grip is locked, the outside key retracts both deadbolt and latchbolt together. That is ANSI function F11, catalogued as Dormitory/Exit.
2) Will the ML2082 mortise lock fit a 1-3/4 inch door with a 2-3/4 inch backset prep?
Yes. The ML2082 is built for 1-3/4 inch (44mm) standard door thickness with a 2-3/4 inch (70mm) backset, and the steel lockcase measures 5-7/8 x 4 x 15/16 inches. Optional thicknesses are available if your door is heavier than standard.
3) Do I have to order the ML2082 handed, or can I flip it in the field?
Order it either way and re-hand it on site. The ML2082 uses Corbin Russwin's patented Quick Reversible latchbolt, so handing changes without opening the lock case. One exception on trim: the Dirke (DS) lever is offered as a specific left hand or right hand part, so that lever has to be ordered to the correct hand.
4) Will the ML2082 latch into the strike already in my frame?
The latchbolt has a 3/4 inch throw and the deadbolt a 1 inch throw, with a 9/16 inch deadlocking auxiliary latch. It ships with an ANSI straight lip strike, 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center. If your frame is cut for a standard ANSI 4-7/8 inch mortise strike you are fine; a strike box prepped only for a latch, with no deadbolt pocket, will need to be replaced to take the 1 inch deadbolt.
5) Can I key the ML2082 into my existing master key system, or order it less cylinder?
Standard is a conventional brass 6-pin cylinder in the L4 keyway, 0-bitted. Four cylinder choices are offered: standard conventional, LC (less cylinder), CL6 (LFIC 6-pin less core) and CL7 (LFIC 7-pin less core), so you can drop in your own small or large format cores. Keying is specified KD (keyed different) or KA (keyed alike) across multiple locks. The lock works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders.
6) Is the ML2082 approved for a 3 hour fire rated opening?
Yes. It is UL/cUL listed to UL10C positive pressure and approved for 3-hour fire doors up to 4 ft x 10 ft single or 8 ft x 10 ft pair. It also carries ANSI/BHMA A156.13 Series 1000 Grade 1 (operational and security), ADA A117.1, California State Fire Marshal and windstorm/hurricane certification. Worth noting for AHJ review on an exit door: the deadbolt and latch retract together with the outside key, and inside grip always retracts the latch.
7) What is the closest cross-brand equivalent to the Corbin Russwin ML2082 dormitory/exit mortise lock?
The Sargent 7925 is the nearest peer. It is a Grade 1 heavy duty mortise lock from the 7900 Series with a dormitory/exit function and rose trim, described with a single cylinder deadbolt. The ML2082 is a Grade 1 dormitory/exit mortise lock with a double cylinder arrangement, where the deadbolt is thrown by key from either side and the outside key retracts both deadbolt and latchbolt when the outside grip is locked. So the decision between them is largely whether the inside face gets a key cylinder or a thumbturn-style single cylinder deadbolt.
8) I need a mortise lock for an opening that only requires locked-outside, always-free-inside operation, not a deadbolt. What should I use instead of the ML2082?
A storeroom function lock is the simpler choice. 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 storeroom mortise lockset for 1-3/4 inch doors with an interchangeable core option. Neither adds the 1 inch deadbolt that the ML2082 carries, so the door prep is simpler and there is no second cylinder to key.
9) We want keypad or credential access on a dorm door instead of keys. What electronic mortise locks compare to the ML2082?
Several electronic mortise options exist. The Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with classroom function and 300 user codes for 1-5/8 to 1-7/8 inch doors, the Dormakaba E-Plex E5086 is a Grade 1 entry/egress pushbutton and card mortise lock in a back-to-back arrangement, and the TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID for 1-3/4 inch doors. The ML2082 is a mechanical, non-electronic lock, so those require power or batteries and a credential program the ML2082 does not need.
10) Will a Baldwin 6301 mortise lock body drop into the same prep as the ML2082?
No. The Baldwin 6301 entry/apartment mortise lock body uses a 2-1/2 inch backset and is offered in knob by knob and lever by lever versions for doors 1-3/4 inch and over. The ML2082 uses a 2-3/4 inch backset, so the cylinder and spindle centerlines fall in different places and the two are not interchangeable in an existing pocket.
11) What lever and rose options do I pick to match the rest of the doors in my building?
Nine lever styles are offered: Armstrong, Citation, Dirke, Essex, Lustra, Newport, Princeton and Regis. Trim mounts on an A rose (2-1/4 inch diameter), F rose (2-7/8 inch diameter), M escutcheon or N escutcheon. Finishes run from 605 bright brass and 606 satin brass through 613 oil-rubbed bronze, 619 satin nickel, 626 satin chrome, 630 satin stainless, 722 black oxidized bronze and BSP black suede powder coat, 14 in all. Trim is thru-bolted for alignment.
12) How much room do I need between the lever and the cylinder when laying out the door prep?
Center to center from knob or lever to cylinder is 3-5/8 inches (92mm), and lever to thumbturn is 2-7/16 inches (62mm). The armored front is 8 x 1-1/4 inches in wrought brass, bronze or stainless. Use those spacings when marking an existing door that is being converted to the ML2082.
13) Is a dormitory/exit mortise lock the right choice, or should I use a storeroom function instead?
Pick dormitory/exit when the occupant needs to lock the outside from inside and always get out freely, as in dorm rooms, apartments and patient rooms. If nobody on the inside should control locking and the door must stay locked outside at all times with free egress, a storeroom function is the better fit, such as the Cal-Royal NM8080 or the Accentra 8805FL, both Grade 1 mortise storeroom locks. For a bed/bath door needing privacy only, the Cal-Royal NM8440 Grade 1 privacy mortise lock with deadbolt is the simpler answer.
14) Is the ML2082 tough enough for a high-abuse dorm or correctional-type corridor?
The lockcase is heavy-gauge steel and the lock is verified to 14.5 million cycles in UL cycle testing (Verification ID V875753), well past the Grade 1 minimum. For high-abuse openings the ML2000VR vandal resistant option adds stainless escutcheons with tapered edges and Torx pin tamper-resistant screws, and Behavioral Health trim (BHSS/BLSS) is offered. Pairing with Corbin Russwin Pyramid or Access 3 high-security cylinders raises key control.
15) We need access control tied into the building, not a standalone lock. What mortise locks should I look at against the ML2082?
Wired and electrified options include the Schlage L9092EU with electric lock/unlock outside lever, keyed outside, request to exit and 12/24VDC operation for 1-3/4 inch heavy duty openings, the BEST 45HW wired electromechanical mortise lock with 12V/24V operation, and the Command Access ML190 motorized mortise lock with field selectable EL/EU operation on 24VDC in a storeroom function. The ML2082 is a mechanical lock, though motorized electric latch retraction is offered on the ML20900 series.
16) For a classroom door rather than a dormitory room, what mortise lock replaces the ML2082?
Classroom function peers include the Cal-Royal NM8070, a Grade 1 classroom mortise lockset with auxiliary deadlatch for 1-3/4 inch doors, and the Marks USA LA318GJ, a Grade 1 classroom security indicator mortise lockset for 1-3/4 inch doors supplied with an ANSI strike and a steel escutcheon 8-1/2 inch H x 2-3/4 inch W x 7/16 inch. The ML2082 is a dormitory/exit function with a keyed deadbolt on both faces, which is a different life-safety behavior than classroom locking.
17) Is a Sargent 4874 mortise deadbolt a substitute for the ML2082?
No. The Sargent 4874 is a double cylinder mortise deadbolt in the 4870 Series with a 2-3/4 inch backset -- deadbolt only, no latchbolt and no lever. The ML2082 combines a 3/4 inch latchbolt with a 1 inch deadbolt in one case so the door latches and can be deadlocked from a single prep. Use the 4874 only where a separate lockset already handles the latching.
18) Is there a behavioral health or anti-ligature alternative to the ML2082 mortise lock?
Yes. The TownSteel MRX-L-01 is 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 is the same passage function with satin stainless ligature resistant arch trim. The Marks USA 5PDN is 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 lock; the ML2082 is a keyed dormitory/exit lock, though it is offered with Behavioral Health BHSS and BLSS trim designs.
19) The opening needs a non-keyed mortise lock. What takes the place of the ML2082?
For free operation both sides, the Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors and the Hager 3810S is a Grade 1 passage mortise lock with rose and a 2-3/4 inch backset, matching the ML2082 backset. For a bed or bath opening, the Hager 3840S is a Grade 1 privacy mortise lock on a 2-3/4 inch backset and the Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors. The ML2082 is a keyed lock with a double cylinder deadbolt.
20) Can I use a BEST 45H lock body in place of the ML2082?
Only if the function matches your opening. The BEST 45H is a heavy duty mortise lock body with public entrance function and field reversible operation, and the 45HCA intruder version carries an intruder function. The ML2082 is a dormitory/exit function and is likewise field reversible, with a quick reversible latchbolt that re-hands without opening the case. A 45H body is also sold as a lock body, where the ML2082 is ordered as a complete set with lever and rose or escutcheon selections.
21) Are the Marks USA 21AC and 22AC double cylinder mortise locks an alternative to the ML2082?
They serve a different door. The Marks USA 21AC and 22AC are entrance double cylinder ornamental iron mortise locks with a round knob, listed for 1 inch door thickness. The ML2082 is built for 1-3/4 inch standard commercial doors and is offered with nine lever styles across the Armstrong, Citation, Essex, Lustra, Newport, Princeton and Regis families. Double cylinder is common to both, but the narrow ornamental iron bodies will not fill a 1-3/4 inch door prep.
22) For an office or entrance door rather than a dorm room, what Grade 1 mortise lock should I consider against the ML2082?
The Cal-Royal NM8050 is a Grade 1 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, non-keyed. The ML2082 is a keyed dormitory/exit function where the outside grip is locked by a toggle-action stop or by projection of the deadbolt -- appropriate where a resident controls the door, less so for an office that needs simple push-button office locking.
23) If I standardize on the ML2000 lockbody, can I change functions later without buying new locks?
Largely, yes. The ML2000 Series offers multi-function capability, with 12 functions configurable from a single ML2054 lockbody, so a facility can stock fewer spare bodies and set the function on site. The ML2082 itself arrives set up as the F11 dormitory/exit double cylinder configuration.
24) Can staff see at a glance whether the door is locked?
Yes, status indicator options showing locked/unlocked are offered on both sectional and escutcheon trim in the ML2000 Series. If a visible indicator is a hard requirement and you also want classroom security function, the Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset for 1-3/4 inch doors with an ANSI strike.
25) What is the difference between the ML2082 and a Schlage L0170 dummy trim?
The Schlage L0170 is half dummy trim for a Grade 1 mortise non-keyed lever lock on 1-3/4 inch doors -- it is a pull only, with no latch and no locking. The Emtek 3019 Brisbane, 3102 Memphis, 3104 Hamilton and 3106 Manhattan mortise entrance locksets are also dummy function. The ML2082 is a working keyed lock with a latchbolt and a 1 inch deadbolt; dummy trim is for the inactive leaf of a pair or a false door.
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Does the Corbin Russwin COR-ML2082-NSA-626 come with a warranty?
Absolutely. The Corbin Russwin COR-ML2082-NSA-626 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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