Corbin Russwin ML20907 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,539.04
$901.88
Corbin Russwin ML20907 Grade 1 No Cylinder Mortise Electrified Lever Lockset, Lustra (Wrought) Lever

Corbin Russwin ML20907 Grade 1 No Cylinder Mortise Electrified Lever Lockset, Lustra (Wrought) Lever

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Model: ML20907-LWA-626-SAF
From the ML2000 Series Collection
$1,539.04
$901.88
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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Corbin Russwin ML20907-LW No Cylinder Mortise Electrified Lever Lockset with Lustra Wrought Lever, ANSI/BHMA Grade 1, EcoFlex Technology

Commercial-Grade Electrified Mortise Security for High-Traffic, Demanding Environments

The Corbin Russwin ML20907-LW No Cylinder Mortise Electrified Lever Lockset is part of the ML2000 Series, an ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 mortise lock engineered for high-traffic, abusive environments. Constructed of heavy-gauge steel and featuring the elegant Lustra (Wrought) lever design, this lockset accommodates door thicknesses from 1-3/8" to 4" with a standard backset of 2-3/4" and a 3/4" latchbolt throw. It integrates with access control platforms and supports Fail Safe/Fail Secure operation, while EcoFlex® technology delivers up to 89% energy savings on all electromechanical functions. UL listed, UL10c compliant, and ADA compliant, this lockset is 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
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Behavioral Health and Secure Care Facilities

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locksets are constructed of heavy-gauge steel and certified to ANSI/BHMA A156.13, Series 1000, Operational and Security Grade 1, ensuring they far exceed industry standards for durability and security in high-traffic, abusive environments. The product is UL listed, UL10c compliant, ADA compliant, ASTM E330 certified, Florida Building Code Windstorm Certified, and rated for use on fire doors up to and including 3-hour fire ratings. Backed by a ten-year mechanical warranty, five-year MELR warranty, and two-year electrical warranty, Corbin Russwin electrified mortise locksets are engineered for demanding commercial applications where dependable, long-term performance is essential.

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Standard Latch:
3/4" Latchbolt
Standard Strike:
ANSI-Straight Lip,1-1/8" (29mm) Lip to Center
Product Subgroup:
Mortise Lockset
Product Type:
Mortise Locks
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Fail Safe/Fail Secure
Product Model:
ML20906
Collection:
ML2000 Series
Product Function:
Fail Safe/Fail Secure
Door Hand Direction:
Field Reversible
Door Thickness Range:
1-3/4"
Product Substrate:
Steel
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

Corbin Russwin ML20907-LWA-626-SAF – Frequently Asked Questions

1) What is the difference between the Fail Safe and Fail Secure versions of the Corbin Russwin ML20907 electrified mortise lock?
Both are offered on the ML20907, and the choice is made when you order. Fail safe unlocks the outside lever when power is removed, which is what you use on a stair or egress door where people must get out or in during an outage. Fail secure keeps the outside lever locked when power drops, which is the normal choice for a storeroom, server room, or exterior opening where security has to hold through a power loss. Free egress from the inside lever is mechanical either way. Pick the function to match the fire and life safety requirement on the door, not the convenience.
2) Will the ML20907 mortise lock fit a 1-3/4 inch commercial door and a standard 2-3/4 inch backset prep?
Yes. The ML20907 is built for a 1-3/4 inch door as standard, with a 2-3/4 inch backset, which is the normal commercial mortise prep. The ML2000 Series accommodates thicknesses from 1-3/8 inch up to 4 inch with optional parts, so thicker doors are handled, but the standard package is the 1-3/4 inch build. The lock case measures 5-7/8 by 4 by 15/16 inches, so the existing mortise pocket needs to accept that.
3) Does the ML20907 come with a cylinder, and can I use my existing keys?
No cylinder is included with the ML20907, so you order the cylinder separately. It works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders, which means an existing masterkey system in the building can usually be carried over instead of starting a new keyway.
4) Will the ML20907 latch into the strike that is already in my frame?
The standard latch is a 3/4 inch throw two-piece anti-friction latchbolt, paired with an ANSI straight lip strike at 1-1/8 inch lip to center, 4-7/8 by 1-1/4 inches. If your frame already has an ANSI/standard 4-7/8 inch mortise strike prep with that lip-to-center, it drops in. A short-lip or T-strike frame will need the strike changed. There is also a 9/16 inch effective throw deadlocking auxiliary latch behind the main bolt.
5) Can the ML20907 be used on a 3-hour fire rated door?
Yes. The ML2000 Series is UL and cUL listed to UL10C positive pressure, rated for fire doors up to and including 3-hour, on single doors up to 4 by 10 feet and pairs up to 8 by 10 feet. It also carries ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1, ADA A117.1, California State Fire Marshal listing, and Florida windstorm certification, which is the paperwork most institutional specs ask for.
6) What is Request to Exit monitoring and do I need it on an electrified mortise lock?
Request to exit (RX) is a switch that signals the access control panel when the inside lever is turned, so the system knows a legitimate egress happened and does not log it as a forced door. The ML20907 is offered with RX and without. Order RX if the opening is alarmed, monitored, or tied to a door position switch. If the lock is simply being energized for card access with no alarm shunting, you can skip it.
7) What is a comparable electrified mortise lock to the Corbin Russwin ML20907 from another brand?
Closest cross-brand match in our line is the Schlage L9092EU electrified mortise lock with 03A trim, keyed outside, request to exit, 12/24VDC, for a 1-3/4 inch door - same idea of an electrically controlled outside lever with RX monitoring. The BEST 45HW wired electromechanical mortise lock is another, running 12V or 24V in a heavy duty case. The Command Access ML190 Series motorized mortise lock is field selectable between EL and EU operation at 24VDC, which is useful when you have not settled fail safe versus fail secure at order time.
8) I do not have power at the door. What mortise lock should I use instead of an electrified one?
With no wiring to the frame, an electrified lock is the wrong call, and there are two directions. Battery or standalone electronic mortise locks: the Alarm Lock DL3500CR Trilogy is Grade 1 classroom function with 300 user codes for 1-5/8 to 1-7/8 inch doors, and the Schlage CO-100 mortise is a Grade 1 standalone keypad lock for 1-3/4 inch doors. Or go purely mechanical: the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset for a 1-3/4 inch door, and the Accentra 8805FL is Grade 1 storeroom in the 8800 Series.
9) What is the closest cross-brand equivalent to the Corbin Russwin ML20907-LW electrified mortise lockset?
The closest peer is the Schlage L9092EU electric lock/unlock outside lever mortise lock, part number SCH-L9092EU-T-03A-626-RX 50-231 COMPLETE, which is a heavy duty corridor-function mortise lock keyed outside, with request-to-exit monitoring and 12/24VDC operation for a 1-3/4 inch door. The ML20907-LW covers the same electrified mortise role: it is ANSI/BHMA Grade 1, Fail Safe/Fail Secure, 2-3/4 inch backset, and is offered with or without request to exit monitoring. The main difference to confirm before you order is cylinder content, since the ML20907 is a no-cylinder configuration while the Schlage peer is described as keyed outside.
10) Is there an electrified mortise lock that lets the electrical function be chosen in the field instead of ordering fail safe or fail secure separately?
Yes. The Command Access ML19092-M motorized mortise lock is a heavy-duty storeroom-function lock in the ML190 Series with field selectable EL/EU operation on 24VDC, so one lock body covers both electrically locked and electrically unlocked behavior. The Corbin Russwin ML20907-LW instead handles this at order time, with Fail Safe and Fail Secure as separate selections, so the electrical mode is fixed by the part you specify.
11) What should I use instead if the opening needs a keypad or credential reader at the door rather than a lock wired to an access control panel?
The Corbin Russwin ML20907-LW is a wired electrified mortise lockset with Fail Safe/Fail Secure operation, so credentials are handled by the system it is wired into. If the reader has to live on the lock, the TownSteel FME-2000 Series is a Grade 1 heavy duty classroom-function mortise lockset with RFID technology for a 1-3/4 inch door, the Schlage CO-100-MS-40-KP is a Grade 1 heavy duty standalone electronic mortise lock with a keypad reader in privacy function, and the Accentra NTM623-NR nexTouch Generation 3 mortise lock uses a capacitive touchscreen keypad with cylinder override and no deadbolt.
12) Which mortise locks look like alternatives to the ML20907-LW but will not do the job?
Several mortise products in the same family of parts are not electrified locking devices. The Schlage L0170 is a half dummy trim, non-keyed Grade 1 mortise lever lock with no latching function, and the Emtek 3102 Memphis and 3106 Manhattan mortise entrance locksets are dummy function. The Sargent 130KB and 130W are mortise thumbturns, not locks. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset and the Kaba Ilco 185 Series is a deadbolt function mortise lock, so neither provides a latching lever. The Corbin Russwin ML20907-LW is a latching lever lockset with Fail Safe/Fail Secure electrified operation.
13) We need wireless access control on a retrofit door with no wiring run. What is the alternative to the ML20907-LW?
The ML20907-LW is a wired electrified mortise lockset and needs power at the opening. For a door without a wire run, the Alarm Lock DL1300NW Trilogy Networx is a wireless electronic mortise lock with a keypad, built for Adams Rite deadlatches, and the Schlage Electronics LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and mobile-enabled deadbolt with LED, rated for 3 hour fire doors in Greenwich trim, right hand.
14) Do I have to order the ML20907 handed, or can it be reversed in the field?
Order it handed, but handing is not a trap here. The latchbolt is a patented quick reversible design, so the hand can be changed in the field without taking the lock case apart. That matters if you are stocking spares for a building with both hands of door, or if the opening got reversed after the hardware was specified.
15) What trim and finish choices do I have to specify on the ML20907?
Four decisions on the order form. Lever style is Lustra (Wrought), LW. Trim is either a rose (A or B) or an escutcheon (M or N) - escutcheon gives more coverage over an old door prep and is also what supports the status indicator options. Finishes are 613 satin bronze oil-rubbed, 625 bright chrome, 626 satin chrome, and 630 satin stainless steel; 626 and 630 are the usual commercial matches. Then fail safe or fail secure, with or without RX. Trim is thru-bolted for alignment and security.
16) I need electric latch retraction rather than an electrified lever. Is that available in the ML20900 series?
Motorized Electric Latch Retraction (MELR) is offered on the ML20900 series. MELR pulls the latchbolt back electrically so the door is on free push-pull during access hours, which is what you want on a high-traffic vestibule or an ADA operator opening. The ML20907 as configured is an electrified lever lock, fail safe or fail secure, so the outside lever is controlled and the latch stays projected. Specify MELR separately if latch retraction is what the drawing calls for.
17) I need staff to see at a glance whether a classroom door is locked. Does the ML20907 support a status indicator?
Status indicator options for locked/unlocked visibility are available in the ML2000 Series on sectional and escutcheon trim, so order an escutcheon (M or N) rather than a rose if you want the indicator. If you are buying a mechanical classroom-security lock rather than an electrified one, the Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset with an ANSI strike and a steel escutcheon measuring 8-1/2 x 2-3/4 x 7/16 inches for a 1-3/4 inch door.
18) Is there a deadbolt in the ML20907, and how far does it throw?
The ML2000 lock case carries a one-piece stainless steel deadbolt with a 1 inch throw, measuring 19/32 by 1-1/4 inches. A 1 inch throw is what most commercial security specs call for on a mortise deadbolt. Center-to-center spacing is 3-5/8 inches lever to cylinder and 2-7/16 inches lever to thumbturn, which is what you check against an existing door face prep before reusing the door.
19) If the door does not need to be electrified at all, what mechanical mortise lock covers the same Grade 1 duty?
For a purely mechanical opening, 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 heavy duty Grade 1 storeroom mortise lockset with an interchangeable core option for 1-3/4 inch doors. Both are keyed mechanical functions with no wiring, where the Corbin Russwin ML20907-LW is built for Fail Safe/Fail Secure electrified control and requires power at the frame.
20) Will the ML20907-LW fit a door thinner than 1-3/4 inches, and what else covers thinner doors?
The Corbin Russwin ML20907-LW is specified at 1-3/4 inch door thickness. If the leaf is thinner, the Alarm Lock DL2700CR Trilogy T2 classroom-function electronic mortise lock and the DL3500CR are both Grade 1 and list a 1-5/8 inch to 1-7/8 inch door thickness range, and the Baldwin 6310 entry/storeroom mortise lock body is listed for 1-3/8 inch and over on a 2-1/2 inch backset. Note that the Baldwin backset differs from the 2-3/4 inch backset used by the ML20907.
21) For a behavioral health or secure care door, is the ML20907-LW the right choice or is there a ligature resistant option?
The Corbin Russwin ML20907-LW is offered with Behavioral Health trim among its ML2000 Series trim designs, so it can be specified for those areas. If the opening calls for a dedicated anti-ligature device, the TownSteel 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, the MRX-A-01 is the same passage function in ligature resistant arch trim, and 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 of those are passage function rather than electrified locking.
22) Is the Dormakaba E-Plex E5086 an alternative to the Corbin Russwin ML20907-LW?
Both are Grade 1 mortise devices, but they solve the opening differently. The Dormakaba E-Plex E5086 is an entry/egress electronic pushbutton and card mortise lock in a back-to-back configuration, so the credential logic sits at the door. The Corbin Russwin ML20907-LW is an ANSI/BHMA Grade 1 electrified mortise lever lockset with Fail Safe/Fail Secure operation, a 2-3/4 inch backset and field reversible handing, driven by the access control system it is wired to, and it can be ordered with request to exit monitoring.
23) We are standardizing a facility on Grade 1 mortise hardware. Which peers keep the same grade if some doors are mechanical and some are electrified?
Grade 1 mortise options across the mix include the Corbin Russwin ML20907-LW electrified lockset, which is ANSI/BHMA Grade 1 with Fail Safe/Fail Secure operation; the Cal-Royal NM8050 office/entrance, NM8070 classroom, NM8080 storeroom and NM8440 privacy locksets, all Grade 1 for 1-3/4 inch doors; the Falcon MA101 Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating; the Sargent 7925 Grade 1 heavy duty dormitory exit function mortise lock with rose trim and single cylinder deadbolt; and the Marks USA LA318GJ Grade 1 classroom security indicator mortise lockset for 1-3/4 inch doors.
24) Is the Dormakaba Saffire LX-I-M002 electronic mortise lockset equivalent to the ML20907-LW?
Not in grade or architecture. The Dormakaba LX-I-M002 Saffire is an electronic RFID mortise lockset with BLE mobile access rated BHMA Grade 2, with the reader and credential handling in the lock itself. The Corbin Russwin ML20907-LW is ANSI/BHMA Grade 1 and is a wired electrified mortise lever lockset with Fail Safe/Fail Secure operation that integrates with an access control platform.
25) If I only need the lock body and will reuse existing trim, is the ML20907-LW still the right part?
The Corbin Russwin ML20907-LW ships as a complete electrified lever lockset with Lustra (Wrought) lever and a choice of rose or escutcheon trim, so it is specified as a set rather than a bare body. If a body alone is what the job calls for, the BEST 45H Series is a heavy duty mortise lock body in public entrance function with field reversible operation, the BEST 45HCA is a heavy duty mortise lockbody with intruder function, and the Baldwin 6301LS is an entry/apartment lever by lever mortise lock body on a 2-1/2 inch backset. Those are mechanical bodies, so they will not provide the Fail Safe/Fail Secure control the ML20907 gives.
26) How much standby power does an electrified mortise lock like this draw on a battery backup?
EcoFlex technology on the ML2000 electromechanical functions cuts energy use by up to 89 percent, which is the reason this one is specified where a lot of openings sit energized around the clock or where the access control power supply and its battery are already near capacity. It applies to all electromechanical functions in the series.
27) How many cycles is the ML2000 mortise lock tested to for a high-traffic entrance?
14.5 million cycles under UL verification, well past the ANSI/BHMA A156.13 Grade 1 minimum. Combined with the heavy-gauge steel lock case and thru-bolted trim, that is why the series gets specified on school corridors, hospital doors, and office main entries where a cylindrical lock would be worn out in a few years.
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Does the Corbin Russwin ML20907-LWA-626-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20907-LWA-626-SAF is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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