Corbin Russwin ML20915 Grade 1...
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$1,838.27
$1,077.40
Corbin Russwin ML20915 No Cylinder, Both Grips Lock, Mortise Electrified Lever Lockset, CS-Citation Lever

Corbin Russwin ML20915 Grade 1 No Cylinder, Both Grips Lock, Mortise Electrified Lever Lockset, CS-Citation Lever

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Model: ML20915-CSA-626-SAF
From the ML2000 Series Collection
$1,838.27
$1,077.40
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Corbin Russwin ML20915-CS Mortise Electrified Lever Lockset, Both Grips Lock, CS-Citation Lever, Fail Safe/Fail Secure

Commercial-Grade Electrified Mortise Security for High-Traffic Applications

The Corbin Russwin ML20915-CS is a heavy-duty mortise electrified lever lockset from the ML2000 Series, engineered to meet the demands of high-traffic, abusive commercial environments. Featuring the CS-Citation lever design with a Both Grips Lock function, this lockset supports both Fail Safe (SAF) and Fail Secure (SEC) operation modes, making it a versatile solution for access control integration. Built to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 standards, it accommodates door thicknesses from 1-3/8" to 4" with a standard backset of 2-3/4" and a 3/4" latchbolt throw. The unit is UL listed, UL10c compliant, and rated for use on fire doors up to and including 3-hour fire ratings, with ADA compliance and Florida Building Code Windstorm Certification.

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 demanding commercial environments. The ML20915-CS is UL listed, UL10c compliant, rated for fire doors up to and including 3-hour fire ratings, ADA compliant, ASTM E330 certified, and Florida Building Code Windstorm Certified, backed by a ten-year mechanical warranty, five-year MELR warranty, and two-year electrical warranty. With EcoFlex® technology delivering up to 89% energy savings and field-reversible latchbolt design, this lockset delivers professional-grade reliability and flexibility for the most demanding access control 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 ML20915-CSA-626-SAF – Frequently Asked Questions

1) What is the difference between the fail safe and fail secure versions of the Corbin Russwin ML20915?
It's a build choice you make at order time, not a field setting. Fail safe unlocks the controlled lever when power drops, which is what you want on a stair or egress-side opening where people have to get out during an alarm. Fail secure keeps the lever locked when power is lost, so the opening stays secure and you rely on mechanical egress from the inside. The ML20915 is offered in both, and you pick one when you order.
2) Does the ML20915 Both Grips Lock come with a cylinder?
No cylinder is supplied with the ML20915. It's the both-grips-lock electrified function without a cylinder, so both levers are controlled electrically and there's no key override built into the order. If you want keyed override on the opening you need to specify a keyed ML20900 function instead. The ML2000 lock body works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders, so the cylinder side is open to whatever keyway your building already runs.
3) Will a Corbin Russwin ML20915 mortise lock fit a standard 1-3/4 inch commercial door?
Yes. 1-3/4 inch (44mm) is the standard door thickness for the ML2000 mortise body, and that is the standard commercial door thickness you'll find on most hollow metal and solid core openings. The series also covers thicknesses from 1-3/8 inch up to 4 inch with optional parts, so unusually thick doors are handled, but the stock build is the 1-3/4 inch one.
4) Will the ML20915 latch into the strike already in my frame?
Check the strike geometry before you assume a swap. The lock uses a 2-3/4 inch backset with a 3/4 inch (19mm) latchbolt throw, plus a 9/16 inch deadlocking auxiliary latch. It ships with an ANSI straight lip strike, 4-7/8 inch x 1-1/4 inch with 1-1/8 inch lip to center. If your frame already has an ANSI 4-7/8 inch strike prep at the same lip-to-center, the new lock drops into it. A frame cut for a non-ANSI or T-strike will need the supplied strike and a frame modification.
5) Do I have to order the ML20915 handed, or can I reverse it on site?
Handing is field reversible. The ML2000 uses a patented quick reversible latchbolt, so you can re-hand the latch without opening up the lock case. That matters on a job where the door schedule and the actual swing disagree, and it means a stocked lock covers either hand.
6) Can the ML20915 go on a fire rated door?
Yes. The lockset is UL and cUL listed, UL10C positive pressure, and rated for fire doors up to and including 3 hours, covering single doors to 4 ft x 10 ft and pairs to 8 ft x 10 ft. It is also ADA compliant per A117.1 and carries California State Fire Marshal listing plus Florida Building Code windstorm certification, which is what a hurricane-zone spec asks for.
7) What do I need to specify when ordering an ML20915 electrified mortise lockset?
Four decisions. Function: fail safe or fail secure. Request to exit monitoring: yes or no, which is the switch your access control panel uses to shunt the alarm when someone leaves through the door. Trim mounting: A or B rose, or M or N escutcheon. And finish: 605 bright brass, 626 satin chrome, or 630 satin stainless. The lever is the CS Citation cast lever throughout.
8) What other electrified mortise locks could I use instead of the Corbin Russwin ML20915?
A few real alternatives depending on what you're driving the opening with. The Schlage L9092EU with 03A trim is the closest direct peer: electric lock/unlock of the outside lever, keyed outside, request to exit, 12/24VDC, for 1-3/4 inch doors. The BEST 45HW wired electromechanical mortise lock is a heavy duty option running 12V or 24V. If you need the latch physically pulled back for a push-button or remote release rather than just the lever unlocked, the Command Access ML190 Series is a motorized mortise lock with field selectable EL/EU operation on 24VDC.
9) If the opening does not have power run to the door, what mortise lock should I use instead of the ML20915?
The ML20915-CS is an electrified mortise lockset requiring a wired connection, so an opening with no power at the frame needs either a mechanical lock or a battery-powered standalone. On the mechanical side, the Accentra 8805FL is a Grade 1 storeroom mortise lock from the 8800 Series 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. For standalone credential control without wiring, the Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes and classroom function for 1-5/8 to 1-7/8 inch doors.
10) What is the closest cross-brand equivalent to a Corbin Russwin ML20915-CS electrified mortise lockset?
The closest peer is the Schlage L9092EU electrified mortise lock with 03A trim, which is a heavy duty mortise lock with electric lock/unlock of the outside lever, keyed outside, request to exit monitoring, and 12/24VDC operation on 1-3/4 inch doors. The ML20915-CS covers the same ground from the Corbin Russwin side: an ML2000 Series mortise electrified lever lockset with Fail Safe and Fail Secure options, request to exit monitoring available, and the CS Citation lever. The practical difference is the key system and trim family - the Corbin Russwin stays in the ML2000 trim and keyway ecosystem, the Schlage in the L Series.
11) I need an electrified mortise lock but my access control panel only supplies 24VDC and I want to pick fail safe or fail secure in the field - what are my options besides the Corbin Russwin ML20915?
The Command Access ML190 Series motorized mortise lock is the alternative built around that requirement: it is a heavy-duty storeroom-function motorized mortise lock with field selectable EL/EU operation and 24VDC power. The Corbin Russwin ML20915-CS instead ships as a Fail Safe or Fail Secure configuration chosen at order time rather than selected in the field. Another wired option is the BEST 45HW Series electromechanical mortise lock, which is heavy duty and runs on 12V or 24V.
12) Will a Baldwin 6310 mortise lock body work in the same door prep as the Corbin Russwin ML20915?
No. The Baldwin 6310 entry/storeroom mortise lock body uses a 2-1/2 inch backset, and the 6301 entry/apartment body is the same 2-1/2 inch backset. The Corbin Russwin ML20915-CS uses a 2-3/4 inch backset, so the cylinder and spindle hole locations in the door face do not line up. If you are matching an existing 2-3/4 inch mortise prep, stay with a 2-3/4 inch backset peer such as the Hager 3810S Grade 1 passage mortise lock.
13) My doors are 2 inches thick. Which electronic mortise locks will not fit, compared to the Corbin Russwin ML20915?
The Alarm Lock Trilogy units are the ones to watch: the DL2700CR classroom, the DL3500CR classroom, and the DL4500 deadbolt are all listed for 1-5/8 inch to 1-7/8 inch doors, which stops short of 2 inches. The ML20915-CS is built on a 1-3/4 inch standard door thickness with optional thicknesses available through the ML2000 Series, and its published range runs from 1-3/8 inch to 4 inch doors, so thicker leaves are handled in the order configuration.
14) Is the Dormakaba Saffire LX-I-M002 a like-for-like replacement for the Corbin Russwin ML20915?
Not on grade. The Dormakaba LX-I-M002 Saffire is an electronic RFID mortise lockset with BLE mobile access certified to BHMA Grade 2. The Corbin Russwin ML20915-CS is built to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1. If a Grade 1 mortise is written into the spec, the Saffire and the Schlage LE Series LEBMB-ADD, which is Grade 2, both fall outside it; the Schlage LEMD-GRW ENGAGE wireless mortise is Grade 1 and does meet it.
15) Should I order request to exit monitoring on an electrified mortise lock?
Order RX if the opening is tied to an access control system that needs to know when the door was used from the secure side. The RX switch signals the panel that the inside lever was turned, so a legitimate exit doesn't register as a forced door. If the lock is simply being energized by a card reader and nothing is monitoring egress, you can skip it. The ML20915 is built either way, so it's decided at order, not added later.
16) Should I pick rose trim or escutcheon trim on a mortise lockset?
Rose trim is two small round plates and shows more of the door face, which suits a clean modern opening and lets you reuse a door with minimal face prep marks. Escutcheon trim is the long plate that covers the lever and cylinder area together, which hides previous prep scars and is what most institutional standards specify. The ML20915 offers A and B rose designs and M and N escutcheons. On the ML2000 series, status indicator options for locked/unlocked visibility are available on both sectional and escutcheon trim.
17) How much space is needed between the lever and the cylinder on an ML2000 mortise prep?
Center to center from knob or lever to cylinder is 3-5/8 inches (92mm), and lever to thumbturn is 2-7/16 inches (62mm). The lock case itself is heavy-gauge steel at 5-7/8 x 4 x 15/16 inches with an 8 x 1-1/4 inch armored front. Those are the numbers to check against an existing mortise pocket before you plan a swap into a door that was prepped for another brand.
18) What grade is the Corbin Russwin ML2000 mortise lock and how many cycles is it tested to?
ANSI/BHMA A156.13 Series 1000, Operational and Security Grade 1, which is the top tier for mortise locks and what most institutional and government specs require. Corbin Russwin publishes UL cycle testing of 14.5 million cycles under verification ID V875753, well past the Grade 1 minimum. For a high-traffic opening in a school, hospital, or office tower, that's the number to put in front of a specifier.
19) Can I standardize a whole building on the ML2000 series if different doors need different functions?
Yes, and that's the main reason facilities buy into this series. Twelve functions are configurable from a single ML2054 lock body, so storeroom, office, classroom and electrified openings can share one stocked body with different trim and cylinder arrangements. Combine that with field reversible handing and you carry far fewer part numbers across a campus. The ML20915 is the both-grips-lock electrified member of that family.
20) Can I use a wireless or RFID mortise lock in place of the Corbin Russwin ML20915 electrified lockset?
They solve different problems. The ML20915-CS is a hardwired electrified mortise lockset that takes its lock and unlock commands from an access control panel, with Fail Safe and Fail Secure configurations. A credential-at-the-door alternative is the Schlage Electronics LEMD-GRW, a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and Greenwich trim, rated for 3 hour fire doors, or the TownSteel FME-2000 Series, a Grade 1 heavy duty classroom mortise lockset with RFID for 1-3/4 inch doors. Choose the wireless units when running power to the frame is impractical and the credential decision can live at the door.
21) What mortise products look like a substitute for the ML20915 electrified lockset but are not?
Several mortise items share the word mortise without doing the same job. The Sargent 130KB and 130W are mortise thumbturns, standard duty trim pieces rather than lock bodies. The Sargent 4874 is a double cylinder mortise deadbolt on a 2-3/4 inch backset with no latch or lever. The Schlage L0170 is a half dummy trim, a non-keyed Grade 1 mortise dummy with no operating latch. The Corbin Russwin ML20915-CS is a complete electrified lever lockset with a 3/4 inch latchbolt and a 2-3/4 inch backset, so none of those three replaces it.
22) The opening does not need access control - it just needs a keyed mortise lock on a 1-3/4 inch door. What is simpler than the ML20915?
For a mechanical keyed opening, the Cal-Royal NM8050 is a Grade 1 office/entrance mortise lockset with auxiliary deadlatch for 1-3/4 inch doors, the NM8070 is the classroom version, and the NM8080 is the storeroom version with an interchangeable core option. The Hager 3850E is a Grade 1 office mortise lock with lever and escutcheon on a 2-3/4 inch backset for 1-3/4 to 2-1/2 inch doors. All of these drop the electrification that the ML20915-CS carries for Fail Safe and Fail Secure access control integration.
23) Which alternatives to the ML20915 keep field reversible handing?
The Corbin Russwin ML20915-CS is field reversible. Among peers, the BEST 45H Series heavy duty mortise lock body in public entrance function is field reversible, and the Falcon MA101 is a Grade 1 heavy-duty mortise passage lock with field reversible operation and a fire rating. Note those two are mechanical functions - public entrance and passage - so they reverse handing in the field but do not provide the electrified lock and unlock the ML20915-CS is built for.
24) For a behavioral health or ligature-resistant opening, what should I specify instead of the ML20915-CS lever lockset?
The CS Citation lever on the ML20915-CS is a conventional lever shape. Where ligature resistance governs, the TownSteel MRX-A-01 is a Grade 1 heavy duty passage mortise lockset with satin stainless anti-ligature arch trim for 1-3/4 inch doors, and the MRX-L-01 is the Grade 1 heavy duty anti-ligature lever version. For a push/pull opening, the Marks USA 5PDN is a Grade 1 hospital passage mortise paddleset that is ligature resistant and ADA compliant in satin stainless steel.
25) Is a keypad mortise lock like the BEST 45HZ or Dormakaba E-Plex an alternative to the ML20915 electrified lockset?
Only if the credential decision can move to the door. The BEST 45HZ EZ Series is an electronic keypad mortise lock with key override, and the Dormakaba E-Plex E5086 is a Grade 1 electronic pushbutton and card entry/egress mortise lock in a back-to-back configuration. Both hold their own user list at the lock. The Corbin Russwin ML20915-CS has no cylinder and no reader of its own - it is an electrified lockset whose Fail Safe or Fail Secure state is driven by an external access control system, with optional request to exit monitoring fed back to that system.
26) The ML20915 has no cylinder. What do I order if I need the mortise lock to come keyed?
The ML20915-CS is the no-cylinder configuration, and the ML2000 Series accepts new or existing Corbin Russwin key systems as well as most other manufacturers' cylinders, so the cylinder is specified separately. If you would rather buy a keyed peer as a single item, the Accentra 8805FL is a Grade 1 storeroom mortise lock, the Cal-Royal NM8080 offers an interchangeable core option on 1-3/4 inch doors, and the Schlage L9092EU with 03A trim is keyed on the outside with request to exit.
27) Does the ML20915 include a deadbolt?
The ML2000 series lock case carries a one-piece stainless steel deadbolt measuring 19/32 x 1-1/4 inches with a 1 inch throw, available on the functions that use it. The ML20915 is a both-grips-lock electrified function, so security comes from the controlled levers and the 3/4 inch latchbolt rather than a keyed or thumbturn deadbolt operation. If the opening needs a separate throw-and-hold deadbolt, specify a deadbolt-carrying function or add a separate mortise deadbolt.
28) Will the ML20915 finish match the door hardware already on my building?
Three finishes are offered: 605 bright brass, 626 satin chrome, and 630 satin stainless steel. 626 is the usual commercial standard on offices and schools, 630 is what most stainless-trim institutional and healthcare packages run, and 605 is the polished brass option for hospitality or older brass-suited buildings. Pick to match the existing hinges and exit devices on the same corridor.
29) Why does the anti-friction latchbolt matter on a heavy commercial door?
The ML2000 uses a two-piece mechanical latchbolt with an anti-friction insert, 5/8 x 1 inch with a 3/4 inch throw. The insert lets the latch ride into the strike with less force, which matters on doors fighting a closer, a positive-pressure stack, or a stiff gasket seal. On a fire rated opening with a heavy closer it's the difference between a door that reliably latches and one that bounces off the strike and leaves the opening unsecured.
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Does the Corbin Russwin ML20915-CSA-626-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20915-CSA-626-SAF is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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