Corbin Russwin ML20914 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,042.47
$755.45
Corbin Russwin ML20914 Fail Secure Electrified Mortise Lock, Both Grips Locked when Not Energized, Outside Cylinder Override, Lever x Lever Body Only

Corbin Russwin ML20914 Grade 1 Fail Secure Electrified Mortise Lock, Both Grips Locked when Not Energized, Outside Cylinder Override, Lever x Lever Body Only

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Model: ML20914-LL-626-SEC
From the ML2000_Series Collection
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,042.47
$755.45
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Corbin Russwin ML20914-LL Fail Secure Electrified Mortise Lock Body with Outside Cylinder Override, Lever x Lever

Grade 1 Electrified Mortise Lock Body for High-Traffic Commercial Applications

The Corbin Russwin ML20914-LL is a fail secure electrified mortise lock body from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government environments. In fail secure operation, both grips are locked when the lock is not energized, and latchbolt retraction by grip from either side is available only when the lock is energized; outside cylinder override allows latchbolt retraction by key when the lock is not energized. Constructed of heavy-gauge steel with a 1" stainless steel deadbolt and patented Quick Reversible latchbolt, this lockbody is rated for a standard door thickness of 1-3/4" (44mm) and draws 500mA peak / 15mA holding current. The auxiliary latch deadlocks the latchbolt for added security, and handing is fully field reversible without disassembling the lock case.

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
  • Educational Facilities and Schools
  • Healthcare Institutions and Hospitals
  • Hotels and Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities
  • Government and Municipal Buildings
  • High-Security Access Control Environments

Tamper-Resistant Design

The ML2000 Series offers the ML2000VR (Vandal Resistant) variant featuring vandal-resistant stainless steel escutcheons with tapered edges and Torx® pin tamper resistant screws, providing a formidable barrier against intrusion and abuse in high-risk environments.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise lock products deliver professional-grade reliability with heavy-gauge steel construction and a 1" stainless steel deadbolt, proven through UL Cycle testing completed at 14.5 Million Cycles (Verification ID: V875753). Backed by a 10 Year Limited warranty and Grade 1 certification, the ML20914-LL is engineered for the most demanding commercial applications where dependable fail secure performance and long-term durability are essential.

Manufacturer Resources

Key Systems Catalog

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Grade:
Grade 1
Standard Latch:
3/4" Latchbolt
Standard Strike:
ANSI straight lip standard, 4-7/8" x 1-1/4" x 1-1/8"
Warranty:
10 Year Limited
Product Subgroup:
Mortise Lock Bodies
Product Type:
Mortise Lockbody Only
Commercial/Residential:
Commercial
Function Description:
Mortise Lockbody Only
Lock Type:
Mortise
Lock Function:
Fail Secure
Product Attribute:
Mortise Locks
Electronic:
No
AMP Draw:
500mA Peak, 15mA Holding
Product Model:
ML20914
Collection:
ML2000_Series
Product Function:
Fail Secure
Door Hand Direction:
Field Reversible
Door Thickness Range:
1-3/4"
Product Substrate:
Brass or Bronze
Product Category:
Mechanical Locks
Department:
Door Hardware

Corbin Russwin ML20914-LL-626-SEC – Frequently Asked Questions

1) What happens to the Corbin Russwin ML20914 mortise lock when the power goes out?
Both grips stay locked. The ML20914 is a fail secure electrified mortise lock, so with no power neither the inside nor the outside lever will retract the latchbolt by grip. The way in is the outside cylinder override, which retracts the latch by key while the lock is unpowered. If you need free egress from the inside on power loss, this is the wrong function and you want a fail safe body instead.
2) What power does the ML20914 electrified mortise lock draw, and will my access control power supply handle it?
Current draw is 500mA peak and 15mA holding. Size the supply for the inrush across every lock on the circuit, not the holding figure, since several doors firing at once is what trips an undersized supply. That draw is per lock body.
3) Will the ML20914 fit my door and my existing mortise pocket and strike?
It is built for a 1-3/4 inch door with a 2-3/4 inch backset, and the lockcase is 5-7/8 x 4 x 15/16 inches. The armored front is 8 x 1-1/4 inches. The standard strike is an ANSI straight lip, 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center, which is the common commercial frame prep, so a frame already cut for an ANSI strike normally takes it. Latchbolt throw is 3/4 inch with a 9/16 inch deadlocking auxiliary latch, and the stainless deadbolt throws 1 inch.
4) I ordered the wrong hand. Can the ML20914 be reversed on site?
Yes, and without opening the case. The patented Quick Reversible latchbolt lets you re-hand the lock in the field without disassembling the lock case, so a left hand opening that turns out to be right hand reverse does not cost you a return.
5) Does the ML20914-LL include levers, trim and a cylinder, or is it just the lock body?
Body only. The ML20914-LL is the mortise lockcase alone, so you order lever trim, roses or escutcheons, and the cylinder separately. The standard cylinder spec for the series is a 6-pin brass cylinder in the L4 keyway, 0-bitted, and the lock accepts most other manufacturers' cylinders if you are matching an existing key system. Trim spacing to plan for: 3-5/8 inches center to center from lever to cylinder, and 2-7/16 inches lever to thumbturn.
6) Is the Corbin Russwin ML20914 fire rated for a labeled opening?
It is UL and cUL listed with UL10C positive pressure, and rated for 3-hour fire doors up to 4 x 10 feet single or 8 x 10 feet pair. It also carries ANSI/BHMA A156.13 Series 1000 Grade 1 for both operational and security, meets ADA A117.1, and is listed by the California State Fire Marshal plus windstorm/hurricane certified.
7) We standardized on Accentra 8800FL mortise bodies. What do we order when one of those doors needs to go on the card reader system?
For a card-reader opening you need an electrified body, which the Accentra 8800FL series mechanical mortise lock body is not. The Corbin Russwin ML20914 from the ML2000 Series is the electrified fail secure counterpart: both grips stay locked when the lock is not energized, latchbolt retraction by grip is available only when energized, and an outside cylinder override retracts the latch by key during a power loss. It draws 500mA peak and 15mA holding, and it is offered with or without request-to-exit monitoring. Both bodies are Grade 1 mortise bodies, so the opening prep and hardware schedule stay in the same class.
8) What is the Request to Exit option on the ML20914 and do I need it?
Request to exit monitoring is an ordering choice on this lock body, available as Yes or No across every finish offered. Take the RX version when your access control panel needs a signal that someone turned the inside lever, typically to shunt an alarm or unlock a mag on egress. If the panel only energizes and de-energizes the lock and does not read door hardware status, the non-RX body is enough.
9) How durable is the ML20914 for a high traffic door like a school or hospital corridor?
The lockcase is heavy-gauge steel with a one-piece stainless deadbolt, and UL cycle testing on the ML2000 Series was carried to 14.5 million cycles (Verification ID V875753), well past the Grade 1 requirement. The two-piece latchbolt has an anti-friction insert so it takes less force to close, which matters on doors with strong closers. It is a commercial-rated lock, not a residential one.
10) Can I key the ML20914 into the master key system already running in my building?
Yes, it works with new or existing Corbin Russwin key systems, and it accepts most other manufacturers' cylinders, so a facility standardized on another brand's keyway can usually carry its own cylinders over. The factory standard is a 6-pin L4 keyway, 0-bitted, which is what you get if you do not specify otherwise. The cylinder is a separate order since this is a body-only item.
11) Is a mortise lock the right choice here, or should I be looking at a cylindrical lock?
A mortise body like the ML20914 goes into a pocket cut into the door edge and carries both a 3/4 inch latchbolt and a separate 1 inch stainless deadbolt in one case, with a 2-3/4 inch backset. That buys you deadbolt security and Grade 1 cycle life in a single prep, which is why mortise dominates institutional and high-security openings. A cylindrical lock drops into a bored hole and is faster and cheaper to install, but it has no integral deadbolt. If the door is already mortise-prepped, stay mortise; retrofitting a bored door to a mortise pocket is a door replacement in most cases.
12) My doors are thicker than 1-3/4 inches. Will the ML20914 still work?
The standard build is for 1-3/4 inch doors, which is the usual commercial thickness. Optional thicknesses are available on the ML2000 Series, but they are a specified option, so a 2 inch or thicker leaf needs to be called out on the order rather than assumed. The lockcase itself is 15/16 inch across, so door thickness mainly changes the trim and spindle, not the pocket depth.
13) Does the Accentra 8800FL mortise lock body meet the same ANSI grade as the Corbin Russwin ML20914 for a spec that calls for Grade 1 mortise locks?
Both meet Grade 1. The Corbin Russwin ML20914 is a Grade 1 mortise lock body and the Accentra 8800FL series mortise lock body is also Grade 1, so either satisfies a drawing that simply calls for a Grade 1 mortise lock. The difference is function rather than grade: the ML20914 is an electrified fail secure body with outside cylinder override, where the 8800FL body is a field reversible mechanical body. Confirm the opening's access control requirement before treating them as interchangeable.
14) The Accentra 8800FL body looks like a drop-in for the Corbin Russwin ML20914 - what would go wrong?
The two are not functionally equivalent even though both are Grade 1 mortise lock bodies with field reversible handing. The ML20914 is an electrified fail secure body: it is wired, draws 500mA peak and 15mA holding current, and depends on being energized for grip retraction from either side. The Accentra 8800FL series body is a mechanical mortise lock body. Dropping a mechanical body into an electrified opening leaves the door with no connection to the access control system and no fail secure behavior on power loss, and the wiring and power transfer already in the frame would have nothing to land on.
15) What finishes does the ML20914 mortise lock body come in?
Fourteen: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 oil-rubbed satin bronze, 613E dark oxidized satin bronze equivalent, 618 bright nickel, 619 satin nickel, 625 bright chrome, 626 satin chrome, 629 bright stainless, 630 satin stainless, 722 black oxidized bronze oil-rubbed, and BSP black suede powder coat. For a property manager matching an existing building standard, 626 satin chrome and 630 satin stainless are the two that usually line up with commercial openings already in place.
How fast can I get the Corbin Russwin ML20914-LL-626-SEC 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 ML20914-LL-626-SEC come with a warranty?
Absolutely. The Corbin Russwin ML20914-LL-626-SEC 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 ML20914-LL-626-SEC?
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Why buy the Corbin Russwin ML20914-LL-626-SEC from ZenSupply?
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