Corbin Russwin ML20906 Grade 1...
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$1,977.69
$1,135.00
Corbin Russwin ML20906 Grade 1 Single Cylinder Mortise Electrified Lever Lockset, CS-Citation Lever

Corbin Russwin ML20906 Grade 1 Single Cylinder Mortise Electrified Lever Lockset, CS-Citation Lever

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Model: ML20906-CSA-626-SAF
From the ML2000 Series Collection
$1,977.69
$1,135.00
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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

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

The Corbin Russwin ML20906-CS is a Single Cylinder Mortise Electrified Lever Lockset from the ML2000 Series, featuring the CS-Citation lever design and engineered to meet the rigors of high-traffic, abusive environments. Built with heavy-gauge steel construction 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 backset of 2-3/4" and a 3/4" latchbolt throw. Featuring Fail Safe/Fail Secure operation and Motorized Electric Latch Retraction (MELR) technology, the ML20906-CS integrates seamlessly with access control platforms and Corbin Russwin key systems including the patented Access 3® and Pyramid systems. EcoFlex® technology on all electromechanical functions delivers up to 89% energy savings, making this lockset an efficient and reliable solution for commercial door hardware 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
  • Behavioral Health and Secure Care Facilities
  • Retail Establishments and Mixed-Use Properties
  • Industrial and Warehouse 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, with additional listings including 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. The ML20906-CS is backed by a ten-year mechanical warranty, a five-year MELR warranty, and a two-year electrical warranty, delivering the long-term reliability and lower total cost of ownership that demanding commercial applications require.

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-CSA-626-SAF – Frequently Asked Questions

1) Do I order the Corbin Russwin ML20906 as fail safe or fail secure?
Both are orderable on the ML20906, and you pick one at the time of order. Fail safe unlocks the outside lever when power drops, which is what you want on an egress path or a stair door tied into the fire alarm. Fail secure keeps the outside lever locked without power, which suits a storeroom, IT closet, or exterior opening where losing power should not open the building. Free egress from the inside lever is unaffected either way.
2) Will the ML20906 mortise lockset 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 door thickness, which is the standard commercial mortise prep, and Corbin Russwin publishes door thickness accommodation from 1-3/8 inches up to 4 inches. The lockcase itself is 5-7/8 by 4 by 15/16 inches with an 8 by 1-1/4 inch armored front, so it drops into a standard ANSI mortise pocket.
3) Do I need to specify handing when ordering this electrified mortise lock?
Handing is specified, but it is not a trap here. The ML20906 uses the patented Quick Reversible latchbolt, so the hand can be changed in the field without opening the lock case. For a property manager standardizing across a building, that means one lock on the shelf covers both left and right hand openings.
4) Will the ML20906 latch into my existing ANSI mortise strike?
It should. The lock throws a 3/4 inch two-piece anti-friction latchbolt with a 9/16 inch deadlocking auxiliary latch, and the supplied strike is a wrought brass, bronze, or stainless ANSI straight lip, 4-7/8 by 1-1/4 inches with 1-1/8 inch lip to center. If your frame already has a standard ANSI 4-7/8 strike cutout, the geometry matches. The one-inch stainless deadbolt also throws into that same ANSI prep.
5) Can I use my existing Corbin Russwin keys, or order the lock without a cylinder?
Two ways to go. Order it with the L4 keyway 6-pin brass cylinder, 0-bitted as standard, and it can be keyed into new or existing Corbin Russwin systems including the patented Access 3 and Pyramid systems. Or order it less cylinder and drop in your own, including most other manufacturers' mortise cylinders, which is the usual route when a facility is already standardized on another keyway.
6) Does this Corbin Russwin electrified mortise lock give me a request-to-exit signal for the access control panel?
Request to exit monitoring is an option you select when ordering the ML20906, yes or no. Spec it yes if your panel needs an RX contact to shunt an alarm or log egress when someone turns the inside lever. If the door is monitored elsewhere or you only need remote lock and unlock, the non-RX build is the simpler order. The lock uses Motorized Electric Latch Retraction, so it ties into access control platforms directly.
7) Is this mortise lockset approved for a 3-hour fire rated door?
Yes. The ML2000 Series is UL and 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 pair. It is also certified to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1, meets ADA A117.1, carries California State Fire Marshal listing, and is windstorm/hurricane certified per ASTM E330 and the Florida Building Code.
8) What is the closest cross-brand equivalent to the Corbin Russwin ML20906-CS electrified mortise lockset?
The Schlage L9092EU electrified mortise lock with 03A lever trim, keyed outside and request-to-exit, is the nearest match from another manufacturer. Both are heavy duty electrified mortise locks for 1-3/4 inch doors with request-to-exit monitoring available; the ML20906-CS is offered in Fail Safe and Fail Secure builds with RX as a selectable option, while the Schlage is catalogued as a corridor function electric lock/unlock outside lever running on 12/24VDC. Lever style differs - the Corbin Russwin uses the CS-Citation cast lever, the Schlage uses 03A trim.
9) What electrified mortise lock can be used instead of the ML20906-CS when the access control panel needs field-selectable fail safe or fail secure on the same lock body?
The Command Access ML190 Series motorized mortise lock is a heavy-duty storeroom-function electrified mortise with field selectable EL/EU operation on 24VDC, so one lock body covers both modes after it is on the door. The Corbin Russwin ML20906-CS is ordered as either a Fail Safe or a Fail Secure build, with the choice made at the time of order rather than in the field.
10) If the opening does not need access control wiring, what mechanical mortise lock covers the same duty as the ML20906-CS?
For a non-electrified opening at the same duty class, the Accentra 8805FL from the 8800 Series is a Grade 1 storeroom mortise lock with the 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. The ML20906-CS is the electrified path, built for Fail Safe/Fail Secure operation tied into an access control platform; the mechanical locks are keyed-only and carry no wiring to the door.
11) What should I use instead of the ML20906-CS if the opening needs credentials at the door rather than a wired access control panel?
Standalone and wireless mortise locks handle that case. The Schlage CO-100-MS is a Grade 1 standalone electronic mortise lock with a keypad reader, the Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes in classroom function for 1-5/8 to 1-7/8 inch doors, and the TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID for 1-3/4 inch doors. The Corbin Russwin ML20906-CS carries no reader of its own - it is a keyed lockset with motorized latch retraction driven by the access control system, with request-to-exit monitoring available.
12) For a behavioral health or patient room opening, what should I specify instead of the ML20906-CS?
Ligature-resistant trim is the deciding factor there. The TownSteel MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset in stainless steel 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 and ADA compliant in satin stainless. The ML20906-CS uses the CS-Citation cast lever, though Corbin Russwin does catalog Behavioral Health BHSS and BLSS trim within the ML2000 Series.
13) My opening is a classroom that needs lockdown, not access control. Is the ML20906-CS the right lock?
For classroom lockdown without a wired panel, look at the Cal-Royal NM8070, a Grade 1 classroom mortise lockset with auxiliary deadlatch for 1-3/4 inch doors, the BEST 45HCAINL heavy duty mortise lockbody with intruder function, the Marks USA LA318GJ Grade 1 classroom security indicator mortise lockset with ANSI strike and steel escutcheon, or the TownSteel FME-4000 electronic intruder classroom mortise lockset with RFID. The ML20906-CS is built around Fail Safe/Fail Secure electrified operation tied to an access control platform rather than key-operated intruder lockdown at the door.
14) What trim and finish choices do I have to decide on for the ML20906-CS?
Three decisions on trim. The lever is the CS Citation cast lever. The rose or escutcheon is an A rose, B rose, M escutcheon, or N escutcheon. Finish comes in 605 bright brass, 613 satin bronze oil-rubbed, 625 bright chrome, 626 satin chrome, and 630 satin stainless steel. Trim is thru-bolted for alignment and added pull resistance. Most commercial jobs land on 626 satin chrome or 630 satin stainless to match existing openings.
15) Should I buy an electrified mortise lock like this or a standalone electronic keypad mortise lock?
They solve different problems. The ML20906 has no reader or keypad of its own; it is a wired electrified lockbody driven by a separate access control panel, which is what you want when the building already has credentials, wiring, and a head end. If you need a few doors controlled without running wire or standing up a panel, a standalone unit makes more sense: the Alarm Lock DL3500CR is a Grade 1 electronic mortise lock with 300 user codes and classroom function, and the Dormakaba E-Plex 2066 is a pushbutton keyless mortise lock. For credentials without wiring, the Schlage LEMD-GRW is a Grade 1 ENGAGE wireless mortise lock with a 125kHz proximity reader.
16) What is the closest equivalent to the ML20906 from another manufacturer?
The nearest like-for-like wired electrified mortise locks we carry are the Schlage L9092EU with 03A trim, a heavy duty corridor-function electric lock for 1-3/4 inch doors with request to exit and 12/24VDC operation, and the BEST 45HW, a heavy duty wired electromechanical mortise lock running 12V or 24V. For a motorized retraction lockbody closer to the MELR concept, the Command Access ML190 Series is field selectable between EL and EU operation on 24VDC.
17) I only need a keyed storeroom or classroom door, no electronics. Is this overkill?
It is, if there is no access control on that opening. The ML20906 is a powered lock and needs a power supply and wire transfer to the door. For a plain mechanical Grade 1 mortise on the same 1-3/4 inch prep, look at the Cal-Royal NM8080 storeroom or NM8070 classroom, the Accentra 8805FL Grade 1 storeroom with Arcadia lever, or the Sargent 7925 Grade 1 dormitory exit function with a single cylinder deadbolt. Keep the electrified lock for the doors the panel actually controls.
18) How much abuse will the ML20906 take in a high traffic building?
The lockcase is heavy-gauge steel and the lock is certified to A156.13 Series 1000 for both Operational and Security Grade 1, the top commercial tier. Corbin Russwin publishes UL cycle testing at 14.5 million cycles, verification ID V875753, which is well past the Grade 1 minimum. The two-piece anti-friction latchbolt also reduces closing force, which matters on doors with heavy closers that get slammed all day.
19) Will the ML20906 work on my glass entrance door or narrow stile aluminum door?
No. This is a wide-stile mortise lockset built for a 5-7/8 by 4 by 15/16 inch lockcase pocket with a 2-3/4 inch backset, which a narrow aluminum stile will not accept. For a glass door bottom rail application look at the Kaba Ilco BR Series glass door bottom rail lock instead, or for an Adams Rite style deadlatch prep, the Alarm Lock DL1300NW electronic mortise lock is built for Adams Rite deadlatches.
20) Do the cylinder and thumbturn holes line up with my existing Corbin Russwin mortise trim?
Spacing on the ML2000 Series is 3-5/8 inches center to center from lever to cylinder, and 2-7/16 inches from lever to thumbturn. If your existing door and trim were prepped to those ML2000 dimensions, the new lock lands on the same holes. If the door was prepped for another manufacturer's spacing, expect to change the trim or plug and re-drill.
21) Is the BEST 45HW a substitute for the Corbin Russwin ML20906-CS?
The BEST 45HW is the closest BEST equivalent - a heavy duty wired electromechanical mortise lock with 12V/24V operation, so it is wired back to a power supply and access control the same way. The difference to confirm is trim and keying: the ML20906-CS ships with the CS-Citation cast lever on A or B rose or M or N escutcheon, in an L4 keyway or less cylinder, and offers request-to-exit monitoring as an ordering choice.
22) What looks like a substitute for the ML20906-CS but will not work on an electrified access control opening?
Several mortise products sit in the same family and will not do the job. The Schlage PM010 and Hager 3810S are Grade 1 passage mortise locks with no keyed or electrified operation, the Schlage L0170 is a half dummy trim with no latch at all, the Sargent 130KB and 130W are mortise thumbturns rather than locksets, and the Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset and no lever. None of them retract a latch on a signal. The ML20906-CS uses motorized electric latch retraction with Fail Safe or Fail Secure operation, which is what an access control panel drives.
23) What is the difference between the ML20906-CS and the Dormakaba E-Plex 5086 for a secured entry?
The Dormakaba E-Plex E5086 is a Grade 1 back-to-back mortise lock with pushbutton and card credentials built into the lock, so it stands alone at the opening. The Corbin Russwin ML20906-CS is a keyed Grade 1 mortise lockset with motorized electric latch retraction, Fail Safe or Fail Secure, that takes its unlock signal from an access control system, and it accepts Corbin Russwin key systems including Access 3 and Pyramid as well as most other manufacturers' cylinders.
24) Is the Schlage LE Series mobile-enabled mortise lock an equivalent to the ML20906-CS?
They are not the same class of product. The Schlage LEBMB-ADD is a Grade 2 mobile-enabled mortise lock with push button and LED covering privacy, office and apartment functions, with a 3 hour fire rating; the Schlage LEMD-GRW is the Grade 1 ENGAGE wireless mortise with a 125kHz proximity reader and Greenwich trim, right hand. Both carry the credential at the door. The Corbin Russwin ML20906-CS is a Grade 1 keyed electrified mortise wired for Fail Safe or Fail Secure operation, and it is field reversible for handing rather than ordered right hand only.
25) Can one ML2000 lockbody cover several different door functions in my building?
Yes, and that is the case for standardizing on it. Twelve functions are configurable from a single ML2054 lockbody, so a facility can stock one body and set it to what each opening needs rather than carrying a separate part number per function. On the electromechanical side, EcoFlex technology cuts holding current with up to 89 percent energy savings, which matters when you have dozens of powered doors on one supply.
How fast can I get the Corbin Russwin ML20906-CSA-626-SAF delivered?
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Does the Corbin Russwin ML20906-CSA-626-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20906-CSA-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-CSA-626-SAF?
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