Corbin Russwin ML20906 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,678.46
$963.00
Corbin Russwin ML20906 Single Cylinder Mortise Electrified Lever Lockset, Lustra (Wrought) Lever

Corbin Russwin ML20906 Grade 1 Single Cylinder Mortise Electrified Lever Lockset, Lustra (Wrought) Lever

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Model: ML20906-LWA-626-SAF
From the ML2000 Series Collection
$1,678.46
$963.00
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Corbin Russwin ML20906-LW Single Cylinder Mortise Electrified Lever Lockset with Lustra Wrought Lever, ANSI/BHMA Grade 1, Fail Safe/Fail Secure

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

The Corbin Russwin ML20906-LW is a Single Cylinder Mortise Electrified Lever Lockset from the ML2000 Series, featuring the Lustra (Wrought) lever design and engineered to meet the rigors of high-traffic, abusive environments. Built on a heavy-gauge steel substrate and certified to ANSI/BHMA A156.13, Series 1000, Operational and Security Grade 1, this lockset accommodates door thicknesses from 1-3/8" to 4" with a standard door thickness of 1-3/4" and a standard backset of 2-3/4". Featuring Fail Safe/Fail Secure operation and Motorized Electric Latch Retraction (MELR), it integrates seamlessly with access control platforms and Corbin Russwin key systems including the patented Access 3® and Pyramid high-security systems. UL listed, UL10c compliant, and UL-cUL listed for use on fire doors rated up to and including 3 hours, this lockset delivers unmatched versatility and reliability for commercial applications.

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
  • Healthcare Institutions and Medical Facilities
  • Educational Facilities and Campus Buildings
  • Government and Municipal Buildings
  • Retail Establishments and Mixed-Use Properties
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential and Hospitality Properties

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, far exceeding minimum requirements for durability and longevity in demanding commercial environments. The ML20906-LW is backed by a ten-year mechanical warranty, a five-year MELR warranty, and a two-year electrical warranty, reflecting the brand's commitment to long-term reliability. With UL listing, UL10c compliance, ADA compliance, ASTM E330 certification, and Florida Building Code Windstorm Certification, this lockset is engineered to perform dependably across the most challenging commercial applications.

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 ML20906-LWA-626-SAF – Frequently Asked Questions

1) Will the Corbin Russwin ML20906 electrified mortise lock fit a 1-3/4 inch door with a 2-3/4 inch backset?
That is exactly the opening it is built for. The ML20906 is a 2-3/4 inch backset mortise lock with a 1-3/4 inch door thickness, which is the standard commercial door. The lock case itself is 5-7/8 x 4 x 15/16 inches, so the door needs a mortise pocket cut to that size. Center to center from the lever to the cylinder is 3-5/8 inches, and lever to thumbturn is 2-7/16 inches, which is what you check against an existing prep before you commit.
2) What is the difference between ordering the ML20906 as fail safe versus fail secure?
You pick one at the order, and the choice decides what the door does when power drops. Fail safe unlocks the outside lever on power loss, which is what you want on an egress or stair path that has to release in an alarm. Fail secure keeps the outside lever locked when power is off, which is the usual choice for a tenant suite, storeroom or anything you do not want opening in a power outage. Free egress from the inside lever is unaffected either way. Both configurations are orderable on the ML20906.
3) Will the ML20906 latch into the ANSI strike already in my frame?
In most commercial frames, yes. The lock ships with an ANSI straight lip strike measuring 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center, which is the standard ANSI 4-7/8 prep found in hollow metal frames. The latchbolt is a two-piece anti-friction type with a 3/4 inch throw, and the auxiliary latchbolt has a 9/16 inch effective throw and deadlocks the latch. The deadbolt throws 1 inch. Measure your existing strike lip to center: if it is not 1-1/8 inches, the lip will not line up with your frame face and you should install the supplied strike.
4) Is the ML20906 mortise lockset handed, or can I re-hand it in the field?
Handing is not a problem here. The ML20906 uses the patented Quick Reversible latchbolt, so the hand is reversed in the field without opening the lock case. That matters if you are stocking one lock across a building with mixed swings, or if a door gets rehung. The lock is listed as field reversible.
5) Do I have to order cylinders with the ML20906, and will it take my building's existing keys?
You choose at the order. The keying options are a C 6-pin cylinder in the L4 keyway, an L4 keyway build, IC 6-pin less core if you are supplying your own interchangeable cores, or less cylinder entirely if the locksmith is fitting one. The standard cylinder is brass, 6-pin L4 keyway, 0-bitted. It works with new or existing Corbin Russwin key systems including the patented Access 3 and Pyramid high security systems, and it accepts most other manufacturers' cylinders, so an existing masterkey system from another brand can usually be carried over.
6) What is the closest cross-brand equivalent to a Corbin Russwin ML20906 electrified mortise lock?
The Corbin Russwin ML20906 is a Grade 1 electrified mortise lockset offered in Fail Safe and Fail Secure versions with optional request-to-exit monitoring. The nearest peers are the Schlage L9092EU electric lock/unlock outside lever mortise lock, a heavy duty corridor-function unit keyed outside with request to exit and 12/24VDC operation for 1-3/4 inch doors, and the BEST 45HW wired electromechanical mortise lock, a heavy duty unit with 12V/24V operation. The Command Access ML19092-M is a heavy-duty motorized storeroom mortise lock with field selectable EL/EU operation on 24VDC, which is the closest match to a motorized latch retraction build.
7) What is a comparable Grade 1 mortise lock if the opening does not need electrification?
The Corbin Russwin ML20906 is an electrified mortise lockset with Fail Safe/Fail Secure operation, so it is specified when the opening is tied to access control. For a purely mechanical Grade 1 mortise opening, the Accentra 8805FL from the 8800 Series is a Grade 1 storeroom mortise lock, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset with an interchangeable core option for doors 1-3/4 inches thick. Both give storeroom function with a key and no wiring run to the frame.
8) Which electronic mortise lock should be used instead when there is no way to run power to the door frame?
The Corbin Russwin ML20906 is a wired electrified mortise lockset with Fail Safe/Fail Secure operation, which assumes power at the opening. Where no wiring can be pulled, standalone battery or wireless mortise locks cover the same door: the Alarm Lock DL3500CR Trilogy is a Grade 1 electronic classroom mortise lock with 300 user codes for doors 1-5/8 to 1-7/8 inches, the Schlage CO-100-MS is a Grade 1 heavy duty standalone electronic mortise lock with a keypad reader for 1-3/4 inch doors, and the Schlage LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and a 3 hour fire rating. Credential management moves to the lock or the wireless gateway rather than to the panel.
9) Is an Alarm Lock Trilogy or a Baldwin mortise lock the right swap for a 1-3/4 inch commercial door?
Check the door thickness first. The Corbin Russwin ML20906 is built for a 1-3/4 inch door. The Alarm Lock DL2700CR classroom, DL3500CR classroom, and DL4500 deadbolt models are all listed for doors 1-5/8 to 1-7/8 inches, which covers 1-3/4. The Baldwin 6301 entry/apartment and 6310 entry/storeroom mortise lock bodies use a 2-1/2 inch backset rather than the 2-3/4 inch backset the ML20906 uses, so the pocket and cylinder location shift and the existing prep will not carry over.
10) What should be used on an aluminum storefront or glass door instead of a Grade 1 electrified mortise lockset?
The Corbin Russwin ML20906 is a commercial mortise lockset for a 1-3/4 inch door with a 2-3/4 inch backset, which suits a hollow metal or wood door prep. Narrow stile and glass openings take different hardware: the Alarm Lock DL1300NW Trilogy Networx is a wireless electronic mortise lock with keypad made for Adams Rite deadlatches, the Kaba Ilco BR Series is a glass door bottom rail lock, and the Dormakaba E-Plex 2066 is built for wide stile doors. The Marks USA 21AC and 22AC entrance double cylinder ornamental iron mortise locks are for 1 inch thick doors.
11) What is MELR on this Corbin Russwin mortise lock and when do I need request to exit monitoring?
MELR is Motorized Electric Latch Retraction: a motor pulls the latch back so the door can be pushed or pulled freely under access control, rather than just unlocking a lever. It is the option on the ML20900 series and is what lets the lock tie into an access control platform. Request to exit monitoring is a separate yes or no choice on the order. Add it when the access control head end needs to know somebody used the inside lever to leave, so the door position alarm is shunted instead of reporting a forced open. Skip it on a door with no monitored egress requirement.
12) What trim and finish do I have to specify when ordering an ML20906-LW?
Four things get specified. Lever style on this configuration is LW, the Lustra wrought lever. Trim is either a rose (A or B) or an escutcheon (M or N), and escutcheon trim is the one to pick if you want the locked/unlocked status indicator option. Finish is 613 satin bronze oil-rubbed, 625 bright chrome, or 626 satin chrome. Then function (fail safe or fail secure), keying, and whether you want request to exit. Trim is thru-bolted, which is why the alignment holds up on a high traffic door.
13) Should I use an electrified mortise lock like this or a standalone electronic keypad lock?
It comes down to whether you have a wired access control system. The ML20906 is a wired electrified mortise lock, so it needs power run to the door and a controller or reader upstream, and in exchange the credential, audit trail and lockdown all live in the head end. If you have no wiring and only need code access on a handful of doors, a standalone keypad mortise lock is the simpler install: ZenSupply carries the Alarm Lock DL3500CR Trilogy Grade 1 electronic mortise lock with 300 user codes in classroom function, and the BEST 45HZ EZ Series keypad mortise lock with key override. For a wired path from another brand, the BEST 45HW Series is a wired electromechanical mortise lock with 12V/24V operation.
14) Can I use the ML20906 to standardize the mortise locks across a whole building?
That is a reasonable way to buy it. The ML2054 lockbody underneath supports 12 functions from one lock case, so passage, office, storeroom and classroom openings can run off the same body with different trim and keying. Add the field reversible latch and you are not stocking left and right hand versions. The trade off: the ML20906 is the electrified version, so plain mechanical openings do not need it. For non-powered doors in the same building, ZenSupply stocks Cal-Royal NM8050 office/entrance, NM8070 classroom and NM8080 storeroom Grade 1 mortise locksets, all on 1-3/4 inch doors.
15) Is the ML20906 heavy duty enough for a high traffic entrance or a school corridor?
The cycle testing is the answer. The lock is built on a heavy-gauge steel case and holds a UL cycle verification of 14.5 million cycles, well past the ANSI/BHMA A156.13 Series 1000 Grade 1 minimum it is certified to. The two-piece anti-friction latchbolt takes less force to close, which matters on a door with a closer and stack pressure. It is also windstorm and hurricane certified and meets ASTM E330, so it holds up on exterior openings in Florida Building Code jurisdictions.
16) Will the ML20906 fit a door thicker than 1-3/4 inches?
The standard build is 1-3/4 inches, and the ML2000 Series accommodates door thicknesses from 1-3/8 up to 4 inches with optional thickness kits. So a thick exterior or acoustic door is workable, but it is not the stock configuration and the trim and spindle length change with it. On a standard 1-3/4 inch commercial door the lock goes in as supplied.
17) Is a Dormakaba E-Plex or PowerPlex mortise lock a substitute for a Corbin Russwin ML20906?
They solve different problems on the same door prep. The Corbin Russwin ML20906 is a wired electrified mortise lockset with Fail Safe/Fail Secure operation and an optional request-to-exit output, so it reports to and is controlled by an access control system. The Dormakaba E-Plex E5086 is a Grade 1 back to back electronic pushbutton and card entry/egress mortise lock, the E-Plex 2066 is an electronic pushbutton keyless mortise lock for wide stile doors, and the PowerPlex P2066 is a self-powered mortise lock. Those manage access at the door itself; substituting one for the ML20906 means the panel no longer drives the lock.
18) What is the simpler option for the non-secured doors in the same opening group?
An electrified Fail Safe/Fail Secure mortise lockset like the Corbin Russwin ML20906 is specified only where the door is controlled. For the passage and privacy doors in the same run, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating, the Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors, the Hager 3810S is a Grade 1 passage mortise lock with rose and 2-3/4 inch backset for doors 1-3/4 to 2-1/2 inches, and the Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors. The ML20906 uses the same 2-3/4 inch backset, so the mortise pocket layout stays consistent with the Hager 3810S.
19) Will a Sargent 4874 mortise deadbolt or a Kaba Ilco 185 do the same job as an electrified mortise lockset?
No. The Corbin Russwin ML20906 is a single cylinder mortise lockset with lever trim and a 3/4 inch latchbolt, so it latches and releases the door on every cycle. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset and the Kaba Ilco 185 Series is a no-handing mortise deadbolt. Both throw a bolt only, with no latch and no lever, so they secure a door that some other device latches rather than replacing the lockset.
20) What looks like a mortise lockset in a search but will not secure the door?
Several mortise-named parts are trim or components rather than locking hardware. The Schlage L0170 is a Grade 1 half dummy trim for a non-keyed mortise lever lock, the Emtek 3019 Brisbane and 3102 Memphis are dummy mortise entrance locksets, the Falcon MESC600DT is dummy escutcheon lever trim for M9900 Series exit devices, and the Sargent 130KB and 130W are mortise thumbturns. None of them latch. A working electrified opening needs a complete lockset such as the Corbin Russwin ML20906, which carries Fail Safe/Fail Secure operation and a 3/4 inch latchbolt.
21) What mortise lock fits a behavioral health opening instead of a standard lever lockset?
The Corbin Russwin ML20906 is furnished with the Lustra wrought lever. Where the opening calls for ligature resistant trim, 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 with satin stainless arch trim, and the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant, ADA compliant, and satin stainless steel. Those are passage function, so keyed or electrified control has to come from elsewhere in the opening.
22) What differs between a Corbin Russwin ML20906 and a BEST 45H mortise lock body?
The Corbin Russwin ML20906 is a complete Grade 1 electrified mortise lockset supplied with lever trim, rose or escutcheon, a 2-3/4 inch backset, and an ANSI straight lip strike with 1-1/8 inch lip to center. The BEST 45H is a heavy duty mortise lock body in public entrance function with field reversible operation, and the 45HCA is offered in intruder function. Those are lock bodies, so trim and cylinder are specified separately. The ML20906 is also field reversible for handing.
23) Can a cylindrical lock be used in place of a mortise lockset on the same door?
Not without changing the door prep. The Corbin Russwin ML20906 is a mortise lock, which needs a rectangular pocket machined into the edge of the door. The Schlage PC10 is a Grade 1 passage cylindrical lock with rose for 1-3/4 inch doors, and a cylindrical lock uses bored cross holes instead. A door already prepped for the ML20906 mortise pocket takes another mortise lock such as the Cal-Royal NM8050, a Grade 1 office/entrance mortise lockset with auxiliary deadlatch for 1-3/4 inch doors.
24) What mortise lock covers a dormitory or corridor opening with a deadbolt where an electrified lock is not required?
The Corbin Russwin ML20906 is a single cylinder electrified mortise lockset with Fail Safe and Fail Secure versions. For a mechanical dormitory opening, the Sargent 7925 is a Grade 1 heavy duty corridor/dormitory function mortise lock from the 7900 Series with rose trim and a single cylinder deadbolt. It gives the occupant a deadbolt at the door rather than depending on a panel signal.
25) Which mortise lock takes a keypad with key override if the ML20906 keying options do not fit the site?
The Corbin Russwin ML20906 is offered with a 6-pin L4 keyway cylinder, an interchangeable core 6-pin less core version, and a less cylinder version. Where a code is wanted at the door alongside a key, the BEST 45HZ EZ Series is an electronic keypad mortise lock with key override function, and the Accentra NTM623-NR nexTouch Generation 3 is a Grade 1 mortise lock with a capacitive touchscreen keypad, no deadbolt, and cylinder override.
26) Is a medium duty electronic mortise latch an acceptable substitute on a high traffic commercial door?
The Corbin Russwin ML20906 is a Grade 1 commercial mortise lockset on a steel substrate. The Codelocks CL2255 is a medium duty electronic tubular mortise latch from the CL2000 Series in a brushed steel finish. Medium duty and Grade 1 heavy duty are different cycle and strength classes, so the CL2255 suits lighter interior traffic while the ML20906 is specified for the heavy traffic openings.
27) Does the ML20906 have a deadbolt, and what is its throw?
Yes. The ML20906 is a single cylinder mortise lock with a one-piece stainless steel deadbolt measuring 19/32 x 1-1/4 inches with a 1 inch throw, plus the separate 3/4 inch latchbolt. A 1 inch deadbolt throw is what most commercial security specs call for, and it is thrown from the inside thumbturn or the outside key depending on the function you order. If you only need a deadbolt and no latch, that is a different part: ZenSupply carries the Sargent 4874 double cylinder mortise deadbolt on a 2-3/4 inch backset.
28) What armored front comes on the ML20906 and does it match an existing mortise cutout?
The armored front is wrought brass, bronze or stainless steel measuring 8 x 1-1/4 inches. That is the standard commercial mortise face size, so it typically drops into an existing mortise prep of the same dimensions without patching the door edge. Check the face on the lock you are pulling out before you order: if it is a narrower or shorter front, the door edge will need work.
How fast can I get the Corbin Russwin ML20906-LWA-626-SAF delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Corbin Russwin ML20906-LWA-626-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20906-LWA-626-SAF is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Corbin Russwin ML20906-LWA-626-SAF?
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