Corbin Russwin ML20906 Grade 1...
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$1,977.69
$1,188.87
Corbin Russwin ML20906 Single Cylinder Mortise Electrified Lever Lockset, AS-Armstrong Lever

Corbin Russwin ML20906 Grade 1 Single Cylinder Mortise Electrified Lever Lockset, AS-Armstrong Lever

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Model: ML20906-ASA-626-SAF
From the ML2000 Series Collection
$1,977.69
$1,188.87
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Corbin Russwin ML20906-AS Single Cylinder Mortise Electrified Lever Lockset with Armstrong Lever, Fail Safe/Fail Secure, ANSI/BHMA Grade 1

Commercial-Grade Electrified Mortise Security for High-Traffic Applications

The Corbin Russwin ML20906-AS Single 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, demanding environments. Featuring the Armstrong lever design and dual Fail Safe (SAF) and Fail Secure (SEC) electrified functions, 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. Constructed of heavy-gauge steel and UL listed and UL10C compliant, it integrates seamlessly with access control platforms and Corbin Russwin key systems including the patented Access 3® and Pyramid systems. EcoFlex® technology delivers up to 89% energy savings on all electromechanical functions, while Motorized Electric Latch Retraction (MELR) retracts the latchbolt in ½ second with applied power.

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 Shopping Centers
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential and Mixed-Use Properties

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locksets are built to heavy-gauge steel construction and certified to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 standards, far exceeding minimum requirements for durability and longevity in high-traffic, abusive environments. The ML20906-AS is backed by a ten-year mechanical warranty, five-year MELR warranty, and two-year electrical warranty, and carries UL listing, UL10C compliance, ADA compliance, ASTM E330 certification, and Florida Building Code Windstorm Certification. With EcoFlex® technology delivering up to 89% energy savings and MELR latchbolt retraction in ½ second, this lockset delivers the professional-grade reliability and access control integration demanded by the most critical 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-ASA-626-SAF – Frequently Asked Questions

1) What's the difference between the fail safe and fail secure versions of the Corbin Russwin ML20906?
Fail safe unlocks the outside lever when power is removed, so the door is free to enter during a power loss. Fail secure keeps the outside lever locked when power drops, and key access still works. The ML20906 is ordered one way or the other, so the choice gets made on the order. Pick fail safe where egress or firefighter access into a space drives the spec, fail secure where the opening must stay secure through an outage.
2) Will the ML20906 mortise lock fit a 1-3/4 inch door with a 2-3/4 inch backset prep?
That's the standard configuration. The ML20906 is built around a 2-3/4 inch backset and 1-3/4 inch door thickness, which is the standard commercial door prep, and Corbin Russwin publishes door thicknesses from 1-3/8 inch up to 4 inch for the ML2000 lock case. The case itself is 5-7/8 x 4 x 15/16 inches with an 8 x 1-1/4 inch armored front, so an existing ANSI mortise pocket for a Grade 1 lock takes it.
3) Do I have to specify handing when I order this electrified mortise lockset?
The lock is handed, but it is field reversible. Corbin Russwin's Quick Reversible latchbolt lets you re-hand it without opening the lock case, so a lock that shows up as the wrong hand does not become a return or a job delay.
4) Will this latch into my existing ANSI mortise strike?
It should. The ML20906 uses a 3/4 inch throw two-piece anti-friction latchbolt with a 9/16 inch effective auxiliary deadlatch, and ships with an ANSI straight lip strike, 4-7/8 x 1-1/4 inches, 1-1/8 inch lip to center. If your frame already has a standard ANSI strike cutout for a Grade 1 mortise lock, the latch and deadbolt line up. Check your existing lip projection against 1-1/8 inch if you have a deep stop or applied gasketing.
5) Can I use my existing Corbin Russwin keys with the ML20906, or order it without a cylinder?
Both routes are open. It can be ordered with an L4 keyway cylinder or less cylinder if you're supplying your own core. Corbin Russwin states the ML2000 lock works with new or existing Corbin Russwin key systems, including the patented Access 3 and Pyramid systems, and accepts most other manufacturers' cylinders. Standard supplied cylinders are brass, 6-pin L4, 0-bitted.
6) Does the ML20906 have a request-to-exit output for the access control panel?
Request to exit monitoring is an option you select when ordering, yes or no. If your panel needs an RX signal to shunt an alarm or log egress on an electrified opening, specify the RX version. Ordering without it and adding monitoring later means replacing the lock, so settle it with the integrator before the order goes in.
7) Can this electrified mortise lock go on a fire rated door?
Yes. The ML2000 mortise lock is UL/cUL listed and UL10C positive pressure compliant, rated for 3-hour fire doors up to 4 by 10 feet single or 8 by 10 feet in a pair. Note that on a fire rated opening the fail safe version has to be coordinated with the fire alarm and the authority having jurisdiction, since the latch must stay latched.
8) What is the closest cross-brand equivalent to the Corbin Russwin ML20906-AS electrified mortise lockset?
The Schlage L9092EU electric lock/unlock outside lever mortise lock is the nearest peer. Like the ML20906, it is an electrified mortise lock with a keyed outside lever, heavy duty, for 1-3/4 inch doors, and it is offered with request to exit monitoring at 12/24VDC. The ML20906-AS covers both Fail Safe and Fail Secure in the same model family with the Armstrong lever, a 2-3/4 inch backset and a 3/4 inch latchbolt, and RX monitoring is an orderable option. Both are mortise-prepped, so the door cutout is comparable.
9) Which electrified mortise lock lets me pick fail safe or fail secure in the field instead of ordering it one way?
The Command Access ML19092-M motorized mortise lock is field selectable between EL and EU operation and runs on 24VDC, so one part covers both modes on site. The Corbin Russwin ML20906-AS is ordered as either Fail Safe or Fail Secure, so the mode is chosen at the time of purchase rather than at the door. Both are heavy duty mortise locks; the Command Access unit is a storeroom function, while the ML20906 is offered with the Armstrong lever in rose or escutcheon trim.
10) I need an electrified mortise lock but there is no access control panel or wiring at the door - what should I use instead?
The ML20906-AS is a wired electrified lock that depends on power at the opening for its Fail Safe or Fail Secure operation. Where no wiring exists, standalone mortise locks cover the same door prep: the Alarm Lock DL3500CR is a Grade 1 electronic mortise lock with 300 user codes and classroom function for 1-5/8 to 1-7/8 inch doors, the Schlage CO-100-MS Grade 1 keypad mortise lock is a heavy duty privacy function for 1-3/4 inch doors, and the BEST 45HZ EZ Series is an electronic keypad mortise lock with key override. The TownSteel FME-2000 Grade 1 classroom mortise lockset uses RFID credentials instead of a keypad.
11) My doors are 1-5/8 inch - can I still use the Corbin Russwin ML20906?
The ML20906-AS is specified for 1-3/4 inch doors. For a thinner leaf, the Alarm Lock Trilogy line is built for 1-5/8 to 1-7/8 inch doors: the DL2700CR is a Grade 1 classroom electronic mortise lock with weatherproof design, the DL3500CR is a Grade 1 classroom unit with 300 user codes, and the DL4500 is a Grade 1 electronic mortise deadbolt with 2,000 user codes and privacy keypad. Those are standalone keypad locks rather than panel-driven electrified locks, so the access control approach changes with the door thickness.
12) What finishes and trim styles does the Corbin Russwin ML20906-AS come in?
The Armstrong cast lever is the lever design on this one, in 625 bright chrome or 626 satin chrome. Trim is your choice of A or B rose, or M, N, or R escutcheon. Escutcheon trim gives you a larger plate that covers older prep or scarring around the mortise cutout, which matters on a retrofit; rose trim is the cleaner look on a new door. Trim is thru-bolted either way.
13) Is this lock ADA compliant for a classroom or healthcare corridor?
The ML2000 Series is stated as ADA A117.1 compliant, and the Armstrong lever is a lever operator, which is what ADA requires in place of a knob. It also carries ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1, California State Fire Marshal listing, and windstorm/hurricane certification, so it covers most institutional spec sheets in one part.
14) If I don't need an electrified lock on every door, what non-electrified Grade 1 mortise options work alongside this on the same building?
For the openings that only need a mechanical function, look at Cal-Royal's NM series in Grade 1 for 1-3/4 inch doors, NM8080 storeroom, NM8070 classroom, NM8050 office/entrance, or NM8440 privacy with deadbolt. Accentra's 8805FL is a Grade 1 storeroom mortise with Arcadia lever in the 8800 Series. Those carry different keyways than the Corbin Russwin L4, so if you're keying the whole building alike, stay in the ML2000 family for the mechanical doors too.
15) Does the ML20906 have a deadbolt, and how far does it throw?
There is a one-piece stainless steel deadbolt with a 1 inch throw, 19/32 by 1-1/4 inches. A full 1 inch throw is what most commercial security specs call for on an exterior or high-security opening. Center to center spacing is 3-5/8 inches from lever to cylinder and 2-7/16 inches from lever to thumbturn, which is what the door prep has to match.
16) How durable is this lock for a high traffic entrance that gets thousands of cycles a day?
It's tested to 14.5 million cycles under UL, verification ID V875753, well past the ANSI/BHMA A156.13 Grade 1 minimum. The lock case is heavy gauge steel, the latchbolt uses a two-piece anti-friction insert so it needs less force to close, and all trim is thru-bolted so it stays in alignment under abuse. This is the construction you want on a main entrance, a school corridor, or a hospital door.
17) If the opening does not need to be electrified, what mechanical mortise lock covers the same Grade 1 duty?
For a straight mechanical opening at Grade 1, the Accentra 8805FL storeroom mortise lock from the 8800 Series, the Cal-Royal NM8080 Grade 1 storeroom mortise lockset for 1-3/4 inch doors, and the Sargent 7925 Grade 1 heavy duty corridor/dormitory mortise lock with rose trim and single cylinder deadbolt all sit in the same mortise prep. The Corbin Russwin ML20906-AS adds the electrified Fail Safe or Fail Secure function and the option of request to exit monitoring, which none of those mechanical locks carry.
18) Is the BEST 45HW wired mortise lock a substitute for the Corbin Russwin ML20906?
The BEST 45HW is a wired electromechanical mortise lock rated heavy duty and built for 12V/24V operation, so it serves the same access control role. The differences are the trim and keying ecosystem: the ML20906-AS comes with the Armstrong cast lever in 625 bright chrome or 626 satin chrome, in A or B rose or M, N and R escutcheons, and is ordered with an L4 keyway cylinder or less cylinder. Confirm your access control voltage and the lever family already on the building before swapping either direction.
19) What looks like a substitute for the ML20906-AS mortise lockset but will not work?
Several mortise-family parts are not interchangeable with it. The Sargent 130KB and 130W are mortise thumbturns only, not locksets. The Schlage L0170 is half dummy trim with no latch, and the Emtek 3102 Memphis and 3106 Manhattan mortise entrance locksets are dummy function. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset and no lever latch. The Kaba Ilco BR Series is a glass door bottom rail lock for a different door type entirely. The Corbin Russwin ML20906-AS is a keyed, latching, electrified lever lockset, so none of those carry the latchbolt or the electrified function.
20) For a behavioral health or ligature-resistant opening, what mortise lockset should I look at instead of the ML20906?
The Corbin Russwin ML20906-AS is supplied with the Armstrong cast lever, a standard projecting lever. Where a ligature-resistant trim is required, the TownSteel MRX-A-01 is a Grade 1 heavy duty ligature resistant arch trim mortise lockset in satin stainless steel, passage function for 1-3/4 inch doors, the MRX-L-01 is the Grade 1 heavy duty anti-ligature lever version, and the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant. Those are passage function and unkeyed, so they do not provide the keyed electrified control the ML20906 does.
21) What is the difference between the Corbin Russwin ML20906 and a wireless access control mortise lock like the Schlage LEMD-GRW?
The Schlage LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and mobile-enabled deadbolt with LED, in Greenwich trim, right hand, with a 3 hour fire rating. Credentials are read at the door and the lock talks to the system wirelessly. The Corbin Russwin ML20906-AS is a hardwired electrified lockset with Fail Safe or Fail Secure operation that takes its unlock signal from the access control system, and it is field reversible for handing rather than being ordered handed.
22) Which credential-reading mortise locks compare to the ML20906 if I want the reader built into the lock?
Several integrate the reader into the lockset itself: the Accentra NTM623-NR nexTouch Generation 3 Grade 1 mortise lock uses a capacitive touchscreen keypad with cylinder override and no deadbolt, the Dormakaba E-Plex E5086 is a Grade 1 electronic pushbutton and card mortise lock in a back to back entry/egress configuration, and the TownSteel FME-4000 is a Grade 1 heavy duty electronic intruder classroom mortise lockset with RFID. The Corbin Russwin ML20906-AS keeps the reader off the lock, which suits openings where the credential reader is already specified separately, and it can be ordered less cylinder to take an existing key system.
23) Can I use a Baldwin 6310 mortise lock body in the same prep as a Corbin Russwin ML20906?
No. The Baldwin 6310 entrance/storeroom mortise lock body uses a 2-1/2 inch backset and the 6310190RRLS lever version is ordered handed as right hand reverse. The Corbin Russwin ML20906-AS uses a 2-3/4 inch backset and is field reversible for handing. The backset difference means the cylinder and lever centers will not line up with an existing ML2000 pocket, so the two are not drop-in for one another.
24) What is the difference between the Corbin Russwin ML20906 and a Schlage LE Series mobile-enabled mortise lock?
The Schlage LEBMB-ADD is a Grade 2 mobile-enabled mortise lock with push button and LED, offered in privacy, office and apartment functions for 1-3/4 inch doors with a 3 hour fire rating. The Corbin Russwin ML20906-AS is certified to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 and is a hardwired Fail Safe or Fail Secure electrified lockset. If your spec calls for Grade 1, the ML20906 meets it and the LEBMB-ADD is listed at Grade 2.
25) Is a battery-powered mortise lock like the Dormakaba PowerPlex an alternative to the electrified ML20906?
The Dormakaba PowerPlex P2066 Series mortise lock is a self-powered option in the PowerPlex 2000 Series, and the E-Plex 2066 Series is an electronic pushbutton keyless mortise lock for wide stile applications. Both avoid running power to the door. The Corbin Russwin ML20906-AS is wired to the access control system, which is what allows Fail Safe release on a fire alarm signal and request to exit monitoring back to the panel. If the opening is part of a monitored egress or alarm interface, the wired ML20906 is the configuration that supports it.
26) How much current does this draw if I'm sizing a power supply for a bank of electrified doors?
Corbin Russwin's EcoFlex technology is stated to deliver up to 89 percent energy savings on all electromechanical functions in the ML2000 line, which is the reason it's a common pick when a single supply has to carry a lot of openings. For the actual amp draw at your voltage, work from the installation instructions supplied with the lock before you size the supply.
27) Can one ML2000 lock body cover several different functions, or do I have to stock a lock for each one?
Twelve functions are configurable from a single ML2054 lock body in the ML2000 line, which cuts down what a property manager or MRO stockroom has to keep on the shelf for a standardized building. Note the ML20906 itself ships as the electrified fail safe or fail secure lock, so the electrified configuration is chosen at order.
28) I only need a lock body, not a complete electrified lockset - what are my options?
The BEST 45H Series heavy duty mortise lock body is offered in public entrance function with field reversible operation, and the 45HCA heavy duty mortise lockbody comes in intruder function. Those ship as bodies to pair with trim you already have. The Corbin Russwin ML20906-AS is supplied as a complete electrified lever lockset with the Armstrong lever and your choice of A or B rose or M, N or R escutcheon trim, so it arrives as a full assembly rather than a body alone.
29) For a non-keyed opening on the same door series, what passage mortise locks compare?
If the leaf needs to latch but never lock, 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 passage latch mortise lock for 1-3/4 inch doors, and the Hager 3810S and 3810E are Grade 1 passage mortise locks with a 2-3/4 inch backset in rose and escutcheon trim respectively for 1-3/4 to 2-1/2 inch doors. The Hager pair shares the 2-3/4 inch backset used by the Corbin Russwin ML20906-AS, which is keyed and electrified.
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Does the Corbin Russwin ML20906-ASA-626-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20906-ASA-626-SAF is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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