Corbin Russwin ML20915 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,838.27
$1,077.40
Corbin Russwin ML20915 No Cylinder Override, Both Grips Lock, Mortise Electrified Lever Lockset, AS-Armstrong Lever

Corbin Russwin ML20915 Grade 1 No Cylinder Override, Both Grips Lock, Mortise Electrified Lever Lockset, AS-Armstrong Lever

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Model: ML20915-ASA-626-SAF
From the ML2000 Series Collection
$1,838.27
$1,077.40
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Corbin Russwin ML20915-AS Mortise Electrified Lever Lockset, No Cylinder Override, Both Grips Lock, Armstrong Lever

ANSI/BHMA Grade 1 Electrified Mortise Security for High-Traffic Commercial Applications

The Corbin Russwin ML20915-AS is a heavy-duty mortise electrified lever lockset from the ML2000 Series, engineered for demanding, high-traffic environments where both security and access control integration are essential. Featuring the Armstrong (AS) lever design, this lockset operates with No Cylinder Override and a Both Grips Lock function, meaning both grips are locked when the lock is energized (SAF mode) or when the lock is not energized (SEC mode), with the auxiliary latch deadlocking the latchbolt in both configurations. Built to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 standards, it accommodates standard door thicknesses from 1-3/8" to 4" and a standard backset of 2-3/4", with a 3/4" latchbolt throw. The lock is UL listed, UL10c compliant, ULC listed, ADA compliant, and rated for use on fire doors up to and including 3-hour fire ratings.

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 Campuses
  • Government and Municipal Buildings
  • Retail and Hospitality Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential and Mixed-Use Properties

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise electrified 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 ML20915-AS is backed by a ten-year mechanical warranty, five-year MELR warranty, and two-year electrical warranty, and carries UL, ULC, ADA, ASTM E330, and Florida Building Code Windstorm certifications. With EcoFlex® technology delivering up to 89% energy savings and seamless integration with leading access control platforms and key systems, Corbin Russwin delivers professional-grade reliability engineered for the most demanding 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 ML20915-ASA-626-SAF – Frequently Asked Questions

1) What does the ML20915 actually do when power is applied or lost?
Both grips stay locked in the ML20915. On the fail safe build both grips are locked when the lock is energized; on the fail secure build both grips are locked when the lock is not energized. Either way the auxiliary latch deadlocks the latchbolt, and there is no cylinder override, so entry depends entirely on the access control system. If someone needs mechanical key entry as a backup, this is the wrong function and you want an electrified mortise lock with key override instead.
2) Will a Corbin Russwin ML20915 mortise lockset fit a standard 1-3/4 inch commercial door?
Yes. 1-3/4 inches is the standard door thickness for this mortise lockset, with a 2-3/4 inch backset, and the description also covers thicknesses from 1-3/8 inch up to 4 inch with optional prep. The steel lockcase measures 5-7/8 x 4 x 15/16 inches and the armored front is 8 x 1-1/4 inches, so the door needs a standard ANSI mortise pocket.
3) Do I have to order the ML20915 handed, or can I flip it on site?
Order it and re-hand it in the field. The lock is handed but uses a quick reversible latchbolt, so handing is changed without opening the lock case. For a property manager carrying spare stock across a building, that means one lock covers left and right hand openings.
4) Can this electrified mortise lock go on a fire-rated door?
Yes. The ML2000 electrified mortise lock is UL and ULC listed, UL10C positive pressure compliant, 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 certified to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1.
5) Will the ML20915 latch into the strike already in my frame?
It ships with an ANSI straight lip strike, 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center, and throws a 3/4 inch two-piece anti-friction latchbolt plus a 9/16 inch deadlocking auxiliary latch. If your frame already has a standard ANSI mortise strike prep with matching lip-to-center, it drops in. A frame cut for a non-ANSI or deeper-lip strike needs the strike changed or the prep modified.
6) What do I have to specify when ordering an ML20915 Armstrong lever lockset?
Four choices. Function (fail safe or fail secure), request-to-exit monitoring (yes or no), trim style (A rose, or B, M, or N escutcheon), and finish (625 bright chrome or 626 satin chrome). The lever is the cast Armstrong AS design on every combination.
7) What is the closest cross-brand equivalent to the Corbin Russwin ML20915 electrified mortise lockset?
The closest peer is the Schlage L9092EU electrified mortise lock in the 03A trim with request-to-exit, 626 finish, which is a heavy duty mortise lock for 1-3/4 inch doors with an electrically controlled outside lever, keyed outside, and 12/24VDC operation. Like the ML20915, it is a wired electrified mortise lock with an RX option; the ML20915 is offered with no cylinder override and both grips locking, with fail safe and fail secure variants, on doors 1-3/4 inch thick with a 2-3/4 inch backset.
8) Is there an electrified mortise lock that can be set to fail safe or fail secure in the field instead of ordering one or the other?
The Command Access ML19092-M is a motorized mortise lock with field selectable EL/EU operation on 24VDC, heavy-duty, storeroom function - so the fail safe or fail secure mode is chosen at install rather than at order. The Corbin Russwin ML20915 is ordered as a fail safe or a fail secure unit, with both grips locked in the energized (SAF) or unenergized (SEC) state depending on which is specified.
9) We do not have power or wiring at the door - what mortise lock should we use instead of the ML20915?
The ML20915 is a wired electrified mortise lock that needs power at the opening to hold both grips locked. Where running wire is not practical, standalone battery or self-powered mortise locks cover the same doors: the Alarm Lock DL3500CR Trilogy 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 Dormakaba PowerPlex P2066 is a mortise lock in the PowerPlex 2000 Series, and the Schlage LEMD-GRW is a Grade 1 ENGAGE wireless mortise lock with a 125kHz proximity reader and a 3 hour fire rating.
10) Our doors are 1-5/8 inch - will the ML20915 work, or do we need another electronic mortise lock?
The ML20915 is specified for 1-3/4 inch door thickness. For thinner doors, the Alarm Lock Trilogy electronic mortise locks are built for 1-5/8 to 1-7/8 inch doors: the DL2700CR is a Grade 1 classroom-function mortise lock with a weatherproof design and the DL3500CR is a Grade 1 classroom mortise lock with 300 user codes.
11) Will a Baldwin 6310 mortise lock body drop into the same prep as a Corbin Russwin ML20915?
No. The Baldwin 6310 entrance/storeroom mortise lock body is a 2-1/2 inch backset lock for doors 1-3/8 inch and over, and the 6301 entrance/apartment bodies are also 2-1/2 inch backset. The ML20915 uses a 2-3/4 inch backset, so the cylinder and spindle centerlines do not line up with a 2-1/2 inch backset prep.
12) Do I need the request-to-exit option on this lock?
Order RX yes if your access control panel needs to know the inside lever was operated, for alarm shunting or egress logging. Both rose and escutcheon trims and both chrome finishes are offered with and without it. If the panel only drives the lock and does not monitor egress, the non-RX build is enough.
13) Can I key this Corbin Russwin mortise lock into my existing master key system?
It works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders. Standard cylinder is brass, 6-pin L4 keyway, 0-bitted. Note the function itself has no cylinder override, so the cylinder is for keying the opening into your system rather than bypassing the electrified lock.
14) Rose or escutcheon trim on the ML20915, does it matter for install?
Both are offered: A rose, or B, M, and N escutcheon plates. Escutcheon covers more of the door face, which helps when you are replacing older trim and want to hide previous prep; rose is the cleaner look on a fresh install. Trim is thru-bolted either way for alignment and security. Center-to-center spacing is 3-5/8 inches lever to cylinder and 2-7/16 inches lever to thumbturn.
15) How is this different from a standalone keypad mortise lock like the Alarm Lock Trilogy or TownSteel FME?
The ML20915 is a wired electrified lockset: it has no keypad or credential reader of its own and relies on an access control panel for power and control. Standalone alternatives ZenSupply carries include the Alarm Lock DL3500CR Trilogy, a Grade 1 classroom-function electronic mortise lock for 1-5/8 to 1-7/8 inch doors, and the TownSteel FME-2000, a Grade 1 classroom mortise lockset with an RFID reader for 1-3/4 inch doors. Choose those when there is no panel or cabling at the opening.
16) Is this lock durable enough for a high-traffic entrance in a school or hospital?
It is built for that. Heavy-gauge steel lockcase, ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1, and UL cycle tested to 14.5 million cycles (Verification ID V875753). The two-piece anti-friction latchbolt also reduces closing force, which matters on doors with closers that get used all day.
17) What is a simpler mechanical alternative to the ML20915 if we do not need access control on the door?
If the opening only needs keyed mechanical control, Grade 1 mechanical mortise locksets cover it: the Accentra 8805FL is a Grade 1 storeroom mortise lock with an Arcadia lever in the 8800 Series, the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset with an interchangeable core option for 1-3/4 inch doors, and the Cal-Royal NM8050 is a Grade 1 office/entrance mortise lockset with an auxiliary deadlatch. The ML20915 adds electrified fail safe or fail secure control of both grips.
18) Is the BEST 45HW a direct substitute for the Corbin Russwin ML20915?
The BEST 45HW is a wired electromechanical mortise lock with 12V/24V operation in the 45HW Wired Mortise Series, heavy duty, so it addresses the same electrified mortise application. It is a different lock body and trim family from the Corbin Russwin ML2000 Series, so trim, prep details and keying follow BEST rather than the ML20915's 2-3/4 inch backset, 3/4 inch latchbolt and ANSI straight lip strike with 1-1/8 inch lip to center.
19) Does the Alarm Lock DL4500 replace an ML20915 on an access-controlled door?
No - the DL4500 is a Grade 1 electronic mortise deadbolt with 2,000 user codes and a privacy keypad, for 1-5/8 to 1-7/8 inch doors, so it throws a deadbolt only and provides no latching lever set. The ML20915 is a mortise lever lockset with a 3/4 inch latchbolt and electrified control of both grips. Substituting the deadbolt leaves the opening without a latch.
20) We want card and mobile credentials at the door rather than wiring to a panel - what mortise locks do that?
Credential-reading mortise locks cover that: the Dormakaba E-Plex E5086 is a Grade 1 entry/egress electronic pushbutton and card mortise lock in back-to-back configuration, the Dormakaba LX-I-M002 Saffire is an electronic RFID mortise lockset with BLE mobile access at BHMA Grade 2, and the TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID technology for 1-3/4 inch doors. The ML20915 instead takes lock and unlock commands over wiring as a fail safe or fail secure device.
21) For a behavioral health or ligature-resistant opening, is there a mortise lockset to use instead of the ML20915?
Yes. 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 Grade 1 lockset with satin stainless ligature resistant 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. Those are non-keyed passage devices, where the ML20915 is an electrified lockset that keeps both grips locked in its specified fail safe or fail secure state.
22) A classroom needs lockdown capability - should I use the ML20915 or a classroom-security mortise lock?
Both approaches exist. Classroom-specific mortise locks include the Marks USA LA318GJ classroom security indicator mortise lockset with ANSI strike and steel escutcheon for 1-3/4 inch doors at Grade 1, the Cal-Royal NM8070 Grade 1 classroom mortise lockset with auxiliary deadlatch, and the TownSteel FME-4000 electronic intruder classroom mortise lockset with RFID at Grade 1. The ML20915 locks both grips electrically in its fail safe or fail secure configuration, which puts lockdown under the access control system rather than at the door.
23) Is the Schlage CO-100 mortise lock an alternative to the ML20915 for a wired access control door?
The CO-100 is a standalone electronic mortise lock in privacy function with a keypad reader, Grade 1 heavy duty for 1-3/4 inch doors, so it operates on its own credentials at the door rather than under panel control. The ML20915 is wired and controlled as a fail safe or fail secure device with both grips locked, and can be ordered with request to exit monitoring reported back to the system.
24) If I standardize on ML2000 across a building, can I change functions later without buying new locks?
Largely, yes. The ML2000 platform gives 12 functions configurable from a single ML2054 lockbody, so a facility that stocks the series can retask openings instead of restocking. Motorized Electric Latch Retraction (MELR) is also available on the ML20900 electrified series if you later need latch retraction at an opening.
25) Does the ML20915 include a deadbolt?
The ML2000 lockcase specification includes a one-piece stainless steel deadbolt measuring 19/32 x 1-1/4 inches with a 1 inch throw. The ML20915 itself is the both-grips-lock electrified function, so day-to-day security comes from the deadlocked 3/4 inch latchbolt under panel control rather than from manual deadbolt throwing.
26) What finishes does the ML20915 Armstrong lever come in?
Two: 625 bright chrome and 626 satin chrome. 626 satin chrome is the common commercial default, so if you are matching existing hardware in an office or institutional building it is usually the one that blends in. Both finishes are offered with rose and with escutcheon trim.
27) Which Grade 1 mortise locks other than the ML20915 are field reversible for handing?
The ML20915 is field reversible for hand. Among comparable mortise locks, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating, and the BEST 45H public entrance mortise lock body is a heavy duty body with field reversible operation. Those two are mechanical, non-electrified functions.
28) Can I use a Sargent 4874 deadbolt or a 130KB thumbturn in place of the ML20915?
No. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset and the Sargent 130KB is a standard mortise thumbturn - a deadbolt-only body and a trim piece. Neither carries a lever or the electrified control of the ML20915, which locks both grips and includes a 3/4 inch latchbolt. They are complements to mortise hardware, not substitutes for an electrified lockset.
How fast can I get the Corbin Russwin ML20915-ASA-626-SAF delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
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 ML20915-ASA-626-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20915-ASA-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 ML20915-ASA-626-SAF?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Corbin Russwin ML20915-ASA-626-SAF from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.

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