Corbin Russwin ML20915 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,539.04
$901.88
Corbin Russwin ML20915 No Cylinder Override, Both Grips Lock, Mortise Electrified Lever Lockset, Lustra (Wrought) Lever

Corbin Russwin ML20915 Grade 1 No Cylinder Override, Both Grips Lock, Mortise Electrified Lever Lockset, Lustra (Wrought) Lever

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Model: ML20915-LWA-626-SAF
From the ML2000 Series Collection
$1,539.04
$901.88
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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$901.88
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Corbin Russwin ML20915 -LW Mortise Electrified Lever Lockset, No Cylinder Override, Both Grips Lock, Lustra Lever, Fail Safe/Fail Secure

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

The Corbin Russwin ML20915 -LW is a heavy-duty mortise electrified lever lockset from the ML2000 Series, engineered for demanding commercial environments where both security and access control integration are essential. Featuring the Lustra (Wrought) lever design and a No Cylinder Override function, this lockset locks both grips simultaneously upon energization, making it ideal for controlled-access applications requiring Fail Safe and Fail Secure operation. Constructed of heavy-gauge steel and certified to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1, it accommodates standard door thicknesses of 1-3/4" (with a range of 1-3/8" to 4") and a standard backset of 2-3/4". UL listed, UL10c compliant, and rated for fire doors up to and including 3-hour fire ratings, this lockset delivers uncompromising performance across a wide range of commercial door 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 and Corporate Campuses
  • Healthcare Institutions and Medical Facilities
  • Educational Facilities and University 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 ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 standards using heavy-gauge steel construction, far exceeding Grade 1 requirements for durability and longevity in high-traffic, abusive environments. The ML20915 -LW is backed by a ten-year mechanical warranty, a five-year MELR warranty, and a two-year electrical warranty, and carries UL, UL10c, ADA, ASTM E330, and Florida Building Code Windstorm certifications. With EcoFlex® technology delivering up to 89% energy savings and seamless integration with Access 3® and Pyramid key systems and access control platforms, this lockset delivers professional-grade reliability and long-term value for 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:
ML20914
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-LWA-626-SAF – Frequently Asked Questions

1) What does "no cylinder override, both grips lock" mean on the Corbin Russwin ML20915?
On the ML20915, energizing the lock secures both the inside and outside grips at once, and there is no key cylinder to override that condition. That makes it an access-control-only opening: entry and egress through the lever are governed by the electrified function, not by a key. If you need a mechanical key override on the outside, this is the wrong ML20900 configuration for you.
2) Should I order the fail safe or the fail secure version of this electrified mortise lock?
Both are orderable on the ML20915 and you pick one at order time. Fail safe unlocks when power drops, which is what egress and stair doors on a fire alarm release usually call for. Fail secure stays locked when power drops, which is what you want on a door protecting property or a server room. The choice is built into the lock, so decide it against the life-safety drawing before you order.
3) Will the ML20915 fit a standard 1-3/4 inch commercial door?
Yes. 1-3/4 inches is the standard door thickness for the ML20915, with a 2-3/4 inch backset, which is the normal commercial mortise prep. The lockcase is 5-7/8 by 4 by 15/16 inches, so the door needs a full mortise pocket cut for it, not a cylindrical bore.
4) Can I use my existing mortise strike with this Corbin Russwin lockset, or do I have to replace the frame prep?
The ML20915 latches with a 3/4 inch throw two-piece anti-friction latchbolt plus a 9/16 inch deadlocking auxiliary latch, and it ships against an ANSI straight lip strike, 4-7/8 by 1-1/4 inches with 1-1/8 inch lip to center. If your frame already carries an ANSI 4-7/8 strike prep from another Grade 1 mortise lock, the cutout lines up. If the existing strike lip to center is different, swap the strike rather than trying to make the old one work.
5) Can this electrified mortise lock go on a fire rated door?
Yes. The ML2000 Series lockset is UL and cUL listed, UL10C positive pressure, and rated for fire doors up to and including 3 hours, covering a single door up to 4 by 10 feet or a pair up to 8 by 10 feet. It is also certified to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1, and carries ADA A117.1.
6) What do I have to specify when ordering the ML20915 beyond the model number?
Four choices go on the order. Fail safe or fail secure. Request to exit monitoring, yes or no, if your access control panel needs an RX signal back from the lever. Trim mounting, either A or B rose or M or N escutcheon. And finish: 625 bright chrome, 626 satin chrome, or 630 satin stainless steel. The lever style is fixed at LW, the Lustra wrought lever.
7) What is a comparable electrified mortise lock if I need a key override on the outside?
The ML20915 has no cylinder override, so if a mechanical key has to get you in when the system is down, look at a keyed electrified mortise lock instead. ZenSupply carries the Schlage L9092EU with 03A trim, a heavy duty electric lock/unlock outside lever mortise lock that is keyed outside, has request to exit, runs 12/24VDC and fits a 1-3/4 inch door. The Command Access ML190 Series is another route, a heavy duty motorized mortise lock with field selectable EL/EU operation on 24VDC in storeroom function.
8) What is the closest electrified mortise lock to the Corbin Russwin ML20915 from another manufacturer?
The Schlage L9092EU with 03A trim is the closest cross-brand match. Like the ML20915, it is a heavy-duty electrified mortise lock for 1-3/4 inch doors with request-to-exit monitoring, and it is supplied for 12/24VDC electric lock/unlock of the outside lever. The difference is in how the outside trim behaves: the ML20915 is a both-grips-lock design with no cylinder override, so energizing controls both the inside and outside grip, while the Schlage L9092EU is keyed outside and controls the outside lever only. If your access control sequence depends on locking both grips, stay with the ML20915; if the opening needs a key override on the outside, the Schlage is the fit.
9) I need an electrified mortise lock but the door already has a Corbin Russwin lock case in it - what retrofits the existing case?
The Command Access ML190 Series motorized mortise lock is the retrofit path. It is a heavy-duty motorized mortise lock body with field-selectable EL/EU operation on 24VDC, which means one lock body covers both fail safe and fail secure without ordering two part numbers. The Corbin Russwin ML20915 is ordered with the fail safe or fail secure function selected at the time of purchase, and it comes as a complete lockset with Lustra lever trim rather than a bare body. Choose the ML190 when you are reusing existing trim and want the function selectable in the field; choose the ML20915 when you want a complete Corbin Russwin lockset on a Corbin Russwin key system.
10) What should I use if the opening does not need access control wiring at all?
If the door is not tied to an access control system, a mechanical Grade 1 mortise lock is the simpler order. The Accentra 8805FL is a Grade 1 storeroom mortise lock from the 8800 Series with an 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. Both keep the outside lever locked at all times with key access, which is the usual mechanical stand-in for a controlled-entry opening. The Corbin Russwin ML20915 is an electrified lockset in a fail safe or fail secure configuration and expects power at the frame; a mechanical storeroom lock needs no transfer hinge, no power supply, and no wiring.
11) Can I use a standalone keypad mortise lock instead of the Corbin Russwin ML20915?
Only if the opening does not need to be controlled from a head-end. The BEST 45HZ EZ Series is an electronic keypad mortise lock with key override, and the Alarm Lock DL3500CR is a Grade 1 electronic mortise lock holding 300 user codes in classroom function for 1-5/8 to 1-7/8 inch doors. Those carry credentials at the door and run on battery, so there is no wiring to the frame. The Corbin Russwin ML20915 is a wired electrified lockset whose fail safe or fail secure state is driven by the access control panel, and it can be ordered with request-to-exit monitoring so the system sees the inside lever being used. Standalone keypads do not report back to a panel, so if you need remote unlock, audit at the head-end, or fail safe release on a fire alarm signal, the ML20915 is the correct choice.
12) What looks like an equivalent to the ML20915 but will not work on a wired access control opening?
Several electronic mortise locks read as substitutes and are not. The Dormakaba E-Plex E5086 is a Grade 1 electronic pushbutton and card lock in a back-to-back mortise configuration, and the Dormakaba PowerPlex P2066 is a self-powered mortise lock - both hold their credentials at the door rather than taking a lock or unlock signal from a panel. The Schlage LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader, which communicates over a wireless link instead of a hardwired run. The Corbin Russwin ML20915 is a wired fail safe or fail secure lockset, so on a job where the drawing calls for a wired electrified mortise lock at the frame, those three are not drop-in replacements.
13) The ML20915 has no cylinder override - what electrified or electronic mortise lock gives me a key or credential override at the door?
The Accentra NTM623-NR nexTouch Generation 3 is a Grade 1 mortise lock with a capacitive touchscreen keypad in a no-deadbolt, with-cylinder-override configuration, and the BEST 45HZ EZ Series electronic keypad mortise lock includes a key override function. The Schlage L9092EU with 03A trim is keyed on the outside while still taking a 12/24VDC lock or unlock signal, which is the closest wired equivalent with a mechanical override. The Corbin Russwin ML20915 is specifically the no-cylinder-override configuration with both grips locking, so if the facility's policy requires a mechanical key path into a powered opening, one of those three is the correct specification.
14) Will an Alarm Lock or Baldwin mortise lock fit the same door prep as the Corbin Russwin ML20915?
Not without checking two dimensions. The Corbin Russwin ML20915 is built for a 2-3/4 inch backset on a 1-3/4 inch door. The Baldwin 6301 and 6310 mortise lock bodies use a 2-1/2 inch backset, so the cylinder and lever spacing will not land on an existing 2-3/4 inch prep. The Alarm Lock Trilogy DL2700CR and DL3500CR are specified for 1-5/8 to 1-7/8 inch door thickness, which is a narrower window than the ML20915 covers. Confirm backset and door thickness against the existing opening before treating any of them as a swap.
15) Do I need to order the ML20915 handed, or can it be reversed in the field?
It is a handed lock but field reversible. The quick reversible latchbolt lets you change hand without opening the lock case, so a lever pulled for a left hand opening can be flipped on site if the door turns out to swing the other way.
16) Do I need request to exit monitoring on an electrified mortise lock?
Order the RX version when your access control system has to know the lever was turned from the inside, for example to shunt an alarm or door position switch on a monitored egress door. If the lock is simply being energized and de-energized by a card reader and nothing needs a signal back, the non-RX version is enough. It is a build option on the ML20915, so it cannot be added later without changing the lock.
17) Will this Corbin Russwin lock work with the key system already in my building?
Keying is not the controlling issue on this particular configuration, because the both-grips-lock version has no cylinder override. Across the ML2000 Series the standard cylinder is brass, 6-pin, L4 keyway, supplied 0-bitted, and the series works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders. If cylinder keying into an existing master system matters on this opening, choose an ML20900 function that includes a cylinder.
18) What is the difference between this wired electrified mortise lock and a standalone electronic mortise lock with a keypad or card reader?
The ML20915 is a wired lock: it has no reader and no credential logic of its own, so it needs power and a signal from an access control panel, and it is the right choice when the door is being tied into a building-wide system. If you want the door to run on its own without wiring, a standalone unit is the other route. ZenSupply carries the Alarm Lock DL3500CR Trilogy, a Grade 1 electronic mortise lock with 300 user codes and classroom function, and the TownSteel FME-2000 Series, a Grade 1 heavy duty classroom mortise lockset with RFID. For a wired alternative from another brand, the BEST 45HW Series is an electromechanical mortise lock with 12V/24V operation.
19) Is the BEST 45HW a substitute for the Corbin Russwin ML20915?
They serve the same kind of opening. The BEST 45HW is a wired electromechanical mortise lock from the 45HW Wired Mortise Series, heavy duty, with 12V/24V operation - the same wired, panel-controlled arrangement as the Corbin Russwin ML20915, which is offered in fail safe and fail secure and with or without request-to-exit monitoring. The practical decision is the key system: the ML20915 works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders, so it is the natural pick on a site already standardized on Corbin Russwin. On a BEST-keyed facility, the 45HW keeps the core family consistent.
20) We are specifying mortise locks across a building and only some doors need electrification - what pairs with the ML20915 on the non-electrified openings?
For the same door prep and lever-height openings, the Hager 3800 Series covers the non-keyed and non-electrified functions on a 2-3/4 inch backset, which matches the 2-3/4 inch backset of the Corbin Russwin ML20915. The 3810S is a Grade 1 passage mortise lock with rose trim and the 3810E is the same passage function with escutcheon, mirroring the rose and escutcheon trim choices offered on the ML20915. The 3850E is the office function with lever and escutcheon, and the 3840S is the privacy function. That gives you passage, office, and privacy on the interior doors while the controlled openings take the electrified ML20915.
21) For a classroom door on an access control system, should I use the ML20915 or a classroom-function mortise lock?
It depends on whether the teacher needs to lock down at the door. The Corbin Russwin ML20915 locks both grips when energized and has no cylinder override, so lockdown is issued from the access control system. If you need lockdown initiated at the opening, the TownSteel FME-4000 Series is a Grade 1 heavy-duty electronic intruder classroom mortise lockset with RFID for 1-3/4 inch doors, and the BEST 45HCA lockbody is offered in an intruder function. The Cal-Royal NM8070 is the mechanical Grade 1 classroom mortise lockset for 1-3/4 inch doors if no electronics are wanted at all.
22) What mortise lock should I use instead of the ML20915 on a behavioral health or anti-ligature opening?
Use a purpose-built ligature-resistant mortise lockset. The TownSteel MRX-L-01 is a Grade 1 heavy-duty anti-ligature lever mortise lockset in stainless steel with passage function for 1-3/4 inch doors, the MRX-A-01 is the same passage function with a 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 steel. The Corbin Russwin ML20915 is supplied with the Lustra wrought lever, which is a conventional lever profile, though the ML2000 Series does offer Behavioral Health BHSS and BLSS trim designs if you want to stay in the Corbin Russwin family.
23) Do I need the full ML20915 lockset, or can I order just a mortise lock body?
The Corbin Russwin ML20915 ships as a complete electrified lockset with Lustra wrought lever trim and a choice of rose or escutcheon in 625 bright chrome, 626 satin chrome, or 630 satin stainless steel. If you already have serviceable trim on the door and only the mechanism failed, a lock body on its own is the shorter order: the BEST 45H Series is a heavy-duty mortise lock body in public entrance function that is field reversible, and the 45HCA is the same heavy-duty body in intruder function. Those are mechanical bodies, so they do not carry the fail safe or fail secure electrification the ML20915 provides.
24) How much wear will this lockset take in a high traffic corridor?
The ML2000 Series lockcase is heavy gauge steel and the ML20915 is certified to ANSI/BHMA A156.13 Series 1000 for both Operational and Security Grade 1, with UL cycle testing at 14.5 million cycles. The latchbolt is a two-piece design with an anti-friction insert, which cuts the force needed to close the door, useful on doors with a closer in schools, hospitals and office corridors.
25) Which finish should I pick to match the rest of the hardware on the floor?
Three finishes are offered on the ML20915 with the Lustra wrought lever: 625 bright chrome, 626 satin chrome, and 630 satin stainless steel. 626 is the usual match for existing commercial lever hardware in a satin chrome building standard, and 630 pairs with stainless push plates, closers and exit devices. 625 is the polished option.
How fast can I get the Corbin Russwin ML20915-LWA-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-LWA-626-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20915-LWA-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-LWA-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-LWA-626-SAF from ZenSupply?
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