Corbin Russwin ML20906 Grade 1...
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$1,977.69
$1,157.99
Corbin Russwin ML20906 Single Cylinder Mortise Electrified Lever Lockset, LS-Lustra Lever

Corbin Russwin ML20906 Grade 1 Single Cylinder Mortise Electrified Lever Lockset, LS-Lustra Lever

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Model: ML20906-LSA-626-SAF
From the ML2000 Series Collection
$1,977.69
$1,157.99
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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Corbin Russwin ML20906-LS Single Cylinder Mortise Electrified Lever Lockset with Lustra Lever, ANSI/BHMA Grade 1, Fail Safe/Fail Secure

ML2000 Series Commercial-Grade Electrified Mortise Lock with Motorized Electric Latch Retraction

The Corbin Russwin ML20906-LS is a Single Cylinder Mortise Electrified Lever Lockset from the ML2000 Series, featuring the Lustra (LS) lever design and built to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 standards. Constructed of heavy-gauge steel, this electrified mortise 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". It supports Fail Safe/Fail Secure operation and integrates Motorized Electric Latch Retraction (MELR) technology, retracting the latchbolt in ½ second with applied power for swift access control. The lock is UL listed, UL10c compliant, UL-cUL Listed for use on fire doors rated up to and including 3-hours, ADA compliant, and Florida Building Code Windstorm Certified.

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 engineered from heavy-gauge steel and certified to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1, far exceeding standard durability and security requirements for demanding commercial environments. The ML20906-LS is UL listed, UL10c compliant, UL-cUL Listed for fire doors rated up to and including 3-hours, ADA compliant, ASTM E330 certified, and Florida Building Code Windstorm Certified, providing comprehensive compliance across a wide range of applications. Backed by a ten-year mechanical warranty, five-year MELR warranty, and two-year electrical warranty, this electrified mortise lockset delivers the reliability and longevity required for high-traffic, security-critical installations.

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-LSA-626-SAF – Frequently Asked Questions

1) What is the difference between ordering the ML20906 as fail safe versus fail secure?
Fail safe and fail secure are both orderable on the Corbin Russwin ML20906, and you pick one at order time. Fail safe unlocks the outside lever when power is removed, which is what you want on a stair or egress-side opening where people must get out or back in on a power loss. Fail secure keeps the outside lever locked when power drops, so the opening stays secure and key access still works. Whichever you choose, the lock is a mortise body with motorized electric latch retraction that pulls the latchbolt in about half a second when power is applied.
2) Will the Corbin Russwin ML20906 mortise lock fit a 1-3/4 inch door with a 2-3/4 inch backset prep?
Yes. The ML20906 is built around a 2-3/4 inch backset and 1-3/4 inch is its standard door thickness, which is the normal commercial door. The lock case is 5-7/8 x 4 x 15/16 inches and the armored front measures 8 x 1-1/4 inches, so a standard ANSI mortise pocket takes it. Thicker doors up to 4 inches are handled with optional thickness spindles and trim.
3) Do I have to specify handing when I order this electrified mortise lockset?
The ML20906 ships handed, but the latchbolt is quick reversible, so you can re-hand it in the field without opening the lock case. If a door swing changes on site or you stock one lock for both hands, that is the feature that saves you a return.
4) Can I use this lock on a 3 hour fire rated door?
Yes. The ML20906 is UL and cUL listed to UL10C positive pressure for fire doors rated up to and including 3 hours, on single doors up to 4 feet by 10 feet and pairs up to 8 feet by 10 feet. It is also ADA compliant per A117.1 and Florida Building Code windstorm certified, which covers most institutional and coastal specs.
5) Will the ML20906 latch into my existing ANSI strike?
It should. The lock uses a 3/4 inch throw two-piece anti-friction latchbolt with a 9/16 inch effective deadlocking auxiliary latch, and the supplied strike is an ANSI straight lip, 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center. If your frame is already prepped for a standard ANSI mortise strike of those dimensions, the existing cutout works. The anti-friction insert also means less closing force on doors with a closer.
6) Do I need to buy a cylinder separately for the Corbin Russwin ML20906?
That depends on how you order it. The ML20906 can be ordered less cylinder, which is what you want if you are pinning into an existing Corbin Russwin key system or using your own cylinders, or with the L4 keyway, supplied 0-bitted so a locksmith bits it to your system. The lock body also accepts most other manufacturers' cylinders, so it can drop into a facility standardized on another keyway.
7) What is the closest electrified mortise lock to the Corbin Russwin ML20906 if I need field-selectable fail safe or fail secure on the same opening?
The Command Access ML190 Series motorized mortise lock (ML19092-M) is the nearest equivalent. It is a heavy-duty motorized mortise lock with field selectable EL/EU operation on 24VDC and a storeroom function. The ML20906 is supplied as Fail Safe/Fail Secure, uses Motorized Electric Latch Retraction, has a 2-3/4 inch backset and a 3/4 inch latchbolt, and is field reversible for handing. Choose the Command Access unit when you want the electrical mode selected in the field at 24VDC; choose the ML20906 when you are staying in the Corbin Russwin ML2000 platform and L4 keyway key system.
8) I need an electrified mortise lock with request-to-exit that is keyed outside - what else works besides the Corbin Russwin ML20906?
The Schlage L9092EU with 03A trim is the direct alternative: a heavy-duty corridor-function mortise lock with electric lock/unlock of the outside lever, keyed outside, request to exit, 12/24VDC, for 1-3/4 inch doors. The Corbin Russwin ML20906 also offers request to exit as an ordering option and covers both Fail Safe and Fail Secure, with a choice of rose or escutcheon trim and the Lustra lever. The Schlage unit is the pick when the opening is already on Schlage L Series prep and keying; the ML20906 fits a Corbin Russwin L4 keyway system.
9) If the door needs credential access at the door instead of wired access control, what replaces the Corbin Russwin ML20906?
A standalone or wireless electronic mortise lock does that job. The TownSteel FME-2000 is a Grade 1 heavy-duty classroom mortise lockset with RFID for 1-3/4 inch doors, and the Schlage LEMD-GRW is a Grade 1 ENGAGE wireless mortise lock with a 125kHz proximity reader, mobile enabled, with a 3 hour fire rating. The Corbin Russwin ML20906 has no reader of its own - it is a Fail Safe/Fail Secure electrified lockset driven by a separate access control system and keyed through a cylinder in the L4 keyway. Pick the reader locks when there is no wiring to the door.
10) Should I order request to exit monitoring with this lock?
Order RX if your access control system needs to know when someone turns the inside lever, which is the usual requirement when the opening is alarmed, tied to a door position switch, or has to suppress a forced-door alarm on legitimate egress. The ML20906 is orderable with or without request to exit monitoring. If the door is simply released by a reader with no alarm logic behind it, you can skip it.
11) What is the difference between the rose and escutcheon trim options on this lockset?
The ML20906 with the Lustra lever comes in three trim configurations: A rose, M escutcheon, and N escutcheon, all in 626 satin chrome. Rose trim is a compact round plate at the lever only. The escutcheon options are a full plate covering lever and cylinder, which is the choice when you want to cover an older escutcheon footprint or match escutcheon trim already hanging on the rest of the building. Center to center spacing is 3-5/8 inches lever to cylinder and 2-7/16 inches lever to thumbturn.
12) Is electric latch retraction better than an electric strike for a controlled-access door?
Motorized electric latch retraction like the ML20906 uses pulls the latchbolt back inside the lock, so the door is free to push open with no frame work beyond running power through the hinge. An electric strike releases the keeper in the frame instead, which means frame prep and a frame that can take it. MELR is the usual pick on a retrofit where you would rather not cut the frame, or on a fire door where you need the latch itself to stay fire rated. On this lock the retraction takes about half a second.
13) How durable is this lock for a high traffic entrance?
The ML20906 is certified to ANSI/BHMA A156.13 Series 1000 at Operational and Security Grade 1, which is the top commercial rating, and Corbin Russwin has it UL cycle tested to 14.5 million cycles. The case is heavy gauge steel, the deadbolt is one-piece stainless with a 1 inch throw, and the trim is thru-bolted. That is the spec for a main entrance, a hospital corridor, or a school opening cycled all day.
14) What else could I use instead of the Corbin Russwin ML20906 for an access controlled mortise opening?
Two close alternatives sit in the same wired-electrified mortise category. The BEST 45HW Series is a wired electromechanical mortise lock running 12V or 24V, heavy duty. The Schlage L9092EU with 03A trim is an electrically unlocked outside lever mortise lock, keyed outside, with request to exit, 12/24VDC, for 1-3/4 inch doors. Command Access also makes the ML190 Series motorized mortise lock with field selectable EL/EU operation on 24VDC, which is the closest match to the ML20906's motorized latch retraction if you want the operation selectable in the field rather than fixed at order.
15) I just need a keypad or credential lock on the door, not a wired one. What should I look at?
If there is no power or access control head end at the opening, a wired lock like the ML20906 is the wrong tool since it depends on applied power to retract the latch. Standalone options include the Alarm Lock DL3500CR Trilogy, a Grade 1 classroom-function electronic mortise lock with 300 user codes for 1-5/8 to 1-7/8 inch doors, the Dormakaba E-Plex E5086 pushbutton and card mortise lock, or the TownSteel FME-2000 Series, a Grade 1 classroom mortise lockset with RFID for 1-3/4 inch doors.
16) Can I standardize a building on ML2000 locks and still use different functions on different doors?
Yes, and that is the point of the series. The ML2000 lockbody supports 12 functions configured from a single ML2054 body, so storeroom, office, classroom and the rest come off common hardware. The ML20906 is the electrified member of that family, so the doors on access control share the same case footprint, 2-3/4 inch backset and ANSI strike prep as the mechanical openings around them. Trim can be matched across the building too, including Museo, Vineyard and the Behavioral Health BHSS/BLSS designs.
17) Is a mortise lock like this a drop-in for a door prepped for a cylindrical lock?
No. The ML20906 needs a mortise pocket in the door edge to take a 5-7/8 x 4 x 15/16 inch steel case plus an 8 x 1-1/4 inch armored front, which a bored cylindrical prep does not have. Converting means either a new door or a mortise kit cut into the existing one. If the opening is prepped cylindrical and you want to keep it that way, look at a bored lock instead, such as the Schlage PC Series for 1-3/4 inch doors.
18) Is the BEST 45HW a substitute for the Corbin Russwin ML20906?
They serve similar openings but work differently. The BEST 45HW is a wired electromechanical heavy-duty mortise lock operating on 12V or 24V. The Corbin Russwin ML20906 is a Grade 1 mortise lockset with Motorized Electric Latch Retraction that pulls the latchbolt back in half a second under applied power, which is what lets it work on high-use access-controlled doors and on pairs with coordinated hardware. If the specification calls out latch retraction rather than simple lever control, the ML20906 is the one that matches; if the door only needs the outside lever electrically controlled, the 45HW covers it.
19) The opening does not need electrification - what mechanical Grade 1 mortise lock should I use instead of the Corbin Russwin ML20906?
Go to a keyed mechanical Grade 1 mortise lockset in the function the door calls for. The Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series with the Arcadia lever. Cal-Royal offers the NM8080 storeroom, NM8050 office/entrance and NM8070 classroom, all Grade 1 heavy duty for 1-3/4 inch doors. The Sargent 7925 is a Grade 1 heavy-duty corridor/dormitory function mortise lock with rose trim and a single cylinder deadbolt. The ML20906 carries the electrified hardware and wiring that none of those require.
20) Are the BEST 45HCA lock bodies an alternative to the Corbin Russwin ML20906?
Only for the mechanical half of the job. The BEST 45H public entrance body is a heavy duty field reversible mortise lock body, and the 45HCAINL is a heavy duty mortise lockbody with intruder function - both are lock bodies rather than complete electrified locksets. The Corbin Russwin ML20906 ships as a single cylinder mortise electrified lever lockset with the Lustra lever, rose or escutcheon trim, and an ANSI straight lip strike with 1-1/8 inch lip to center. Order the BEST bodies when you are reusing existing trim; order the ML20906 when the door needs the electrified lockset complete.
21) Can an Alarm Lock Trilogy mortise lock take the place of a Corbin Russwin ML20906 on an access controlled door?
Not on the same terms. The Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes and classroom function, and the DL1300NW is a Trilogy Networx wireless electronic mortise lock with keypad for Adams Rite deadlatches - both are keypad locks with door thickness ranges of 1-5/8 to 1-7/8 inches on the DL3500CR. The Corbin Russwin ML20906 is wired to an access control system, is UL-cUL listed for fire doors up to 3 hours, and accommodates door thicknesses from 1-3/8 to 4 inches. Thick doors and fire-rated openings tied to a head-end system point to the ML20906.
22) What looks like a substitute for the Corbin Russwin ML20906 but will not work on an access controlled opening?
Several mortise items sit next to it in a search and cannot do the job. The Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock, the Falcon MA101 is a Grade 1 heavy-duty mortise passage lock, the Schlage L0170 is a Grade 1 half dummy trim, and the Sargent 130KB is a standard duty mortise thumbturn. None of those are keyed or electrified. The Corbin Russwin ML20906 is a single cylinder electrified lockset with Fail Safe/Fail Secure operation and an L4 keyway cylinder option, which is what an access controlled door requires.
23) For a behavioral health or ligature resistant opening, what should I specify instead of the Corbin Russwin ML20906?
TownSteel offers the MRX-L-01, a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, and the MRX-A-01 with ligature resistant arch trim. Marks USA offers the MAR5PDN, a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant in satin stainless steel. The Corbin Russwin ML20906 is ADA compliant and offered with Behavioral Health BHSS/BLSS trim within the ML2000 trim range, so it remains the option when the same opening also has to be electrified.
24) Will a Baldwin 6310 mortise lock body drop into the same prep as the Corbin Russwin ML20906?
No. The Baldwin 6310 entry/storeroom mortise lock body uses a 2-1/2 inch backset and covers doors 1-3/8 inch and over, and the Baldwin 6301 entry/apartment body is also 2-1/2 inch backset. The Corbin Russwin ML20906 uses a 2-3/4 inch backset with a heavy-gauge steel lockcase measuring 5-7/8 by 4 by 15/16 inch and an 8 by 1-1/4 inch armored front. Those are different mortise pockets and different cylinder-to-lever spacing, so the two are not interchangeable in an existing door.
25) Is the Dormakaba E-Plex E5086 an option in place of the Corbin Russwin ML20906?
It is, on doors that should run standalone. The Dormakaba E-Plex E5086 is a Grade 1 entry/egress electronic pushbutton and card mortise lock in a back to back configuration, and the E-Plex 2066 is a pushbutton keyless mortise lock for wide stile doors. Both carry their own credential entry at the door. The Corbin Russwin ML20906 has no on-board keypad or card reader; it is a Fail Safe/Fail Secure electrified lockset with Motorized Electric Latch Retraction that takes its signal from the access control system and can be keyed to an existing Corbin Russwin system.
26) Is there a way to see at a glance whether the door is locked?
Corbin Russwin offers status indicator options on ML2000 trim, available on both sectional and escutcheon trim, showing locked or unlocked at the door. That is commonly specified in schools and healthcare where staff need to confirm a room is secured without pulling the lever. Specify it with the trim when you order.
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Does the Corbin Russwin ML20906-LSA-626-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20906-LSA-626-SAF is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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