Corbin Russwin ML20932 Grade 1...
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$1,678.46
$914.55
Corbin Russwin ML20932 Double Cylinder, Both Grips Lock, Mortise Electrified Lever Lockset, Lustra (Wrought) Lever

Corbin Russwin ML20932 Grade 1 Double Cylinder, Both Grips Lock, Mortise Electrified Lever Lockset, Lustra (Wrought) Lever

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Model: ML20932-LWA-626-SAF
From the ML2000 Series Collection
$1,678.46
$914.55
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Corbin Russwin ML20932-LW Double Cylinder Mortise Electrified Lever Lockset with Lustra Wrought Lever, Fail Safe/Fail Secure, ANSI/BHMA Grade 1

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

The Corbin Russwin ML20932-LW is a Double Cylinder, Both Grips Lock Mortise Electrified Lever Lockset from the ML2000 Series, featuring the Lustra (Wrought) lever design. Built for high-traffic, abusive environments, this lockset is constructed of heavy-gauge steel and meets ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 requirements. It supports both Fail Safe (SAF) and Fail Secure (SEC) operating modes, accommodates door thicknesses from 1-3/8" to 4" with a standard door thickness of 1-3/4", and features a 3/4" latchbolt throw with a standard backset of 2-3/4". UL listed, UL10c compliant, and UL-cUL listed for use on fire doors rated up to and including 3 hours, this lockset integrates with access control platforms and Corbin Russwin key systems including patented Access 3® and Pyramid.

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 Mixed-Use Properties
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential and Hospitality Properties

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locksets are engineered from heavy-gauge steel to meet and exceed ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 requirements, delivering proven reliability in the most demanding commercial environments. The ML20932-LW is backed by a ten-year mechanical warranty, a five-year MELR warranty, and a two-year electrical warranty, reflecting Corbin Russwin's commitment to long-term performance. With UL listing, UL10c compliance, ADA compliance, and fire door ratings up to 3 hours, this lockset provides the certifications and durability that security professionals 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:
ML20932
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 ML20932-LWA-626-SAF – Frequently Asked Questions

1) Will the Corbin Russwin ML20932 mortise lockset fit a 1-3/4 inch door with a 2-3/4 inch backset prep?
Yes. The ML20932 is built around a 2-3/4 inch backset and a 1-3/4 inch door thickness, which is the standard commercial prep. The lock case itself measures 5-7/8 x 4 x 15/16 inches and the armored front is 8 x 1-1/4 inches, so it drops into a standard ANSI mortise pocket. Optional door thicknesses are available up to 4 inches for thicker doors.
2) What is the difference between the Fail Safe and Fail Secure versions of the ML20932, and which do I order?
Both operating modes are orderable on the ML20932. Fail Safe (SAF) unlocks the electrified lever when power is removed, which is what you want on an egress or stair door where people must get out during a power loss. Fail Secure (SEC) keeps the lever locked when power drops, which is what you want on a storeroom, IT closet, or exterior opening you do not want to open itself during an outage. Pick the mode against your life-safety drawing before you order, since it is a build option on the lock, not a field setting.
3) Does the ML20932 lock both levers, or just the outside one?
Both. The ML20932 is the double cylinder, both grips function, so both the inside and outside levers are controlled and there is a cylinder on each side. That makes it a different animal from a single-cylinder electrified corridor lock like the Schlage L9092EU 03A, which electrifies the outside lever only and is keyed outside. If you need free egress by turning the inside lever at all times, a both-grips lock is the wrong choice.
4) Is this Corbin Russwin electrified mortise lock listed for a 3-hour fire door?
Yes. The ML20932 is UL and cUL listed, UL10C positive pressure, for fire doors rated up to and including 3 hours, covering single doors to 4 ft x 10 ft and pairs to 8 ft x 10 ft. It also meets ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1, ADA A117.1, California State Fire Marshal, and windstorm/hurricane certification.
5) Will the ML20932 latch into the strike already in my frame?
The latchbolt is a two-piece anti-friction design measuring 5/8 x 1 inch with a 3/4 inch (19mm) throw, and the auxiliary latchbolt gives 9/16 inch effective deadlocking throw. The deadbolt is one-piece stainless, 19/32 x 1-1/4 inch, with a 1 inch throw. The supplied strike is a wrought brass, bronze, or stainless ANSI straight lip unit, 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center. If your frame already has a standard ANSI 4-7/8 inch strike prep with matching lip-to-center, the existing strike will take it; a non-ANSI or short-lip strike needs replacing.
6) What keying options can I get on the ML20932, and can I use my existing Corbin Russwin keyway?
Four keying choices are offered: a conventional 6-pin cylinder in the L4 keyway, an IC 6-pin housing less core, L4 keyway, and less cylinder for locksmiths supplying their own. The standard cylinder is brass, 6-pin L4, 0-bitted. It works with new or existing Corbin Russwin key systems including the patented Access 3 and Pyramid systems, and the lock accepts most other manufacturers' cylinders, so you can keep an existing master key system in place.
7) What is the closest equivalent to the Corbin Russwin ML20932 electrified mortise lockset from another manufacturer?
The closest match in function is the Schlage L9092EU electrified mortise lock in the 03A trim, 626 finish, which is a heavy duty mortise lock with an electrically controlled outside lever, keyed outside, request-to-exit monitoring, and 12/24VDC operation for a 1-3/4 inch door. The ML20932 is also an electrified mortise lever lockset that can be ordered Fail Safe or Fail Secure, with or without request-to-exit monitoring, on a 1-3/4 inch door with a 2-3/4 inch backset. The difference is that the ML20932 is a double cylinder, both grips lock, so both sides carry a cylinder, while the Schlage is keyed outside only and is a corridor function.
8) If the opening does not need to be wired, what mechanical mortise lock should I use instead of the ML20932?
For a mechanical opening, Grade 1 mortise locksets are chosen by function: the Accentra 8805FL is a Grade 1 storeroom mortise lock with the Arcadia lever, the Cal-Royal NM8050 is a Grade 1 office/entrance mortise lockset with auxiliary deadlatch for a 1-3/4 inch door, and the Cal-Royal NM8070 is the Grade 1 classroom version. The ML20932 is the electrified route, ordered Fail Safe or Fail Secure, and is the one to keep when the lock has to be released or secured from an access control system.
9) Can I use a standalone keypad or credential mortise lock instead of the ML20932 if there is no access control panel?
Yes, several standalone mortise locks make the credential decision at the door instead of at a panel. The Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes in classroom function for a 1-5/8 to 1-7/8 inch door, the Schlage CO-100-MS-40-KP is a Grade 1 standalone electronic mortise lock with keypad reader in privacy function for a 1-3/4 inch door, and the BEST 45HZ EZ Series is an electronic keypad mortise lock with key override. The Corbin Russwin ML20932 has no onboard reader or keypad; it is wired Fail Safe or Fail Secure and relies on an external access control source.
10) What looks like a substitute for the ML20932 but will not control access?
Non-keyed and dummy mortise trims share the mortise prep and the lever look but do not latch under control: the Schlage L0170 is a Grade 1 half dummy trim for a 1-3/4 inch door, the Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock, and the Hager 3810S and 3810E are Grade 1 passage mortise locks with rose and escutcheon respectively on a 2-3/4 inch backset. None of those take a cylinder or an electrical input. The ML20932 is a double cylinder, both grips lock ordered Fail Safe or Fail Secure, with keying options including a 6-pin L4 keyway cylinder, IC 6-pin less core, or less cylinder.
11) Will a Baldwin 6301 or 6310 mortise lock body work in the same door prep as the ML20932?
No. The Baldwin 6301 entry/apartment and 6310 entry/storeroom mortise lock bodies are 2-1/2 inch backset products, offered knob by knob or lever by lever. The Corbin Russwin ML20932 is a 2-3/4 inch backset lockset, so the cross bore and case pocket centerlines do not line up between the two.
12) Are the Dormakaba Saffire and Schlage LE mortise locks rated the same as the ML20932?
Not at the same grade. The Dormakaba LX-I-M002 Saffire electronic RFID mortise lockset with BLE mobile access is BHMA Grade 2, and the Schlage LEBMB-ADD mobile-enabled mortise lock with push button and LED is Grade 2 for a 1-3/4 inch door with a 3 hour fire rating. The Corbin Russwin ML20932 meets ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1.
13) Do I have to order the ML20932 handed, or can I re-hand it in the field?
It ships handed but it is field reversible. The ML2000 lockbody uses a patented Quick Reversible latchbolt, so the handing can be reversed without opening the lock case. Useful when you are stocking spares for a building with mixed handing.
14) Can I get request-to-exit monitoring on this electrified mortise lock?
Yes, request-to-exit monitoring is an orderable option on the ML20932, and it can also be ordered without. Specify RX if your access control panel needs to see the inside lever being operated so it shunts the door contact instead of reporting a forced entry.
15) What trim and finish do I have to specify on the ML20932-LW?
The lever is the Lustra wrought design (LW). You choose rose or escutcheon trim: A rose, B rose, M escutcheon, or N escutcheon. Finishes are 625 bright chrome and 626 satin chrome, so 626 is the one to match against the usual satin chrome and stainless openings in a commercial building. Trim is thru-bolted for alignment and added security, and status indicator options for locked/unlocked visibility are available on sectional and escutcheon trim.
16) How durable is this lock for a high-traffic entrance in a school or hospital?
The ML2000 lockcase is heavy-gauge steel and meets ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1. Corbin Russwin publishes a UL cycle result of 14.5 million cycles (Verification ID V875753), well past the Grade 1 minimum, which is why it gets specified on main entries, corridor doors, and clinical areas rather than a Grade 2 electronic lock.
17) Should I use a wired electrified mortise lock like this or a standalone electronic mortise lock?
The ML20932 is a wired lock that ties into an access control platform, so credentials, audit, and schedules live in the panel and the door needs power run to it through a transfer hinge or loop. If you cannot get power to the opening, a standalone battery lock is the alternative: the TownSteel FME-2000 Series is a Grade 1 RFID classroom mortise for 1-3/4 inch doors, and the Dormakaba E-Plex 2066 is a keyless pushbutton mortise lock. Those trade the central control and monitoring for a far simpler install. If you need both grips controlled and true fail safe behavior on a 3-hour fire door, stay with the wired mortise.
18) Is there an alternative electrified mortise lock if I need field-selectable fail safe or fail secure on one part number?
The Command Access ML190 Series motorized mortise lock is field selectable between EL and EU operation on 24VDC, heavy-duty, storeroom function. On the Corbin Russwin ML20932 the mode is chosen when you order, Fail Safe or Fail Secure, so the Command Access unit is the one to look at if you want a single stocked part that can be set either way at the door. BEST also offers the 45HW wired electromechanical mortise lock with 12V/24V operation.
19) What is the center-to-center spacing between the lever and the cylinder on the ML2000 mortise trim?
Lever to cylinder is 3-5/8 inches (92mm) center to center, and lever to thumbturn is 2-7/16 inches (62mm). Those are the numbers to check against an existing escutcheon cutout or an old door prep before you commit to reusing the hole pattern; if the spacing on the door does not match, you will need new trim to cover it.
20) I need wireless credential control on a fire-rated door - what is the alternative to a wired electrified mortise lock?
The Schlage Electronics LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and Greenwich trim, right hand, rated for 3 hour fire doors, and the Alarm Lock DL1300NW is a Trilogy Networx wireless electronic mortise lock with keypad built for Adams Rite deadlatches. The Corbin Russwin ML20932 is a wired electrified lockset, ordered Fail Safe or Fail Secure with optional request-to-exit monitoring, and is UL10C listed for fire doors rated up to and including 3 hours.
21) Is a mortise lock body like the BEST 45H the same thing as the ML20932?
No. The BEST 45H is a heavy duty mortise lock body in public entrance function with field reversible operation, and the 45HCA intruder version is likewise a lockbody - a case without trim, ordered separately from levers and roses. The Corbin Russwin ML20932 is a complete electrified lever lockset with the Lustra wrought lever and a choice of A or B rose or M or N escutcheon trim in bright chrome or satin chrome.
22) For a behavioral health or ligature-resistant opening, what mortise lockset should I look at instead?
TownSteel's MRX line is purpose-built for it: the MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset in passage function for a 1-3/4 inch door, and the MRX-A-01 is the satin stainless ligature resistant arch trim version. 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 ML20932 is an electrified lever lockset, and the ML2000 trim range does include Behavioral Health BHSS and BLSS designs.
23) If I only need a keyed deadbolt on the opening rather than a full electrified lockset, what mortise option covers that?
The Sargent 4874 is a double cylinder mortise deadbolt on a 2-3/4 inch backset from the 4870 Series, which gives you cylinders both sides and a bolt with no lever operation. The Alarm Lock DL4500DB is a Grade 1 electronic mortise deadbolt with 2,000 user codes and a privacy keypad for a 1-5/8 to 1-7/8 inch door. The Corbin Russwin ML20932 shares the 2-3/4 inch backset and the double cylinder arrangement but adds levers on both grips and electrified Fail Safe or Fail Secure operation.
24) Which mortise locks fit doors thinner or thicker than the 1-3/4 inch standard the ML20932 is built around?
The Hager 3800 Series passage and office mortise locks cover 1-3/4 inch to 2-1/2 inch doors, the Hager 3840S privacy covers 1-3/4 inch to 2 inch, the Baldwin 6310 lock body is listed for 1-3/8 inch and over, and the Marks USA 21AC and 22AC ornamental iron mortise locks are built for 1 inch doors. The Corbin Russwin ML20932 is specified at 1-3/4 inch as its door thickness.
25) Is the Dormakaba E-Plex 5086 a substitute for the ML20932 on a back-to-back controlled opening?
The Dormakaba E-Plex E5086 is a Grade 1 entry/egress electronic pushbutton and card mortise lock in a back-to-back configuration, so credentials are presented on both sides at the door itself. The Corbin Russwin ML20932 is the both-grips-lock electrified equivalent in mechanical terms - double cylinder, key both sides - but its release comes from wired Fail Safe or Fail Secure control rather than an onboard keypad or card reader.
26) Is the BEST 45HW wired mortise lock an alternative to the ML20932?
The BEST 45HW is a heavy duty wired electromechanical mortise lock with 12V/24V operation, so it belongs to the same wired-to-a-panel category as the Corbin Russwin ML20932. The ML20932 differs in being a double cylinder, both grips lock ordered specifically as Fail Safe or Fail Secure, with an optional request-to-exit switch and the Lustra wrought lever.
27) Can I use one ML2000 lockbody across several different door functions in my building?
Yes. The ML2000 platform gives multi-function capability, with 12 functions configurable from a single ML2054 lockbody. For a facility standardizing hardware that means fewer distinct lock bodies on the shelf and fewer part numbers to manage across offices, storerooms, and classrooms. Note the ML20932 itself is the double cylinder both-grips electrified configuration.
28) Is a Motorized Electric Latch Retraction option available on the ML20900 series?
Yes, MELR is offered on the ML20900 series. It retracts the latch electrically so the door can be held in a push/pull condition during business hours, then relatched on schedule, which is common on main entries and lobby doors.
How fast can I get the Corbin Russwin ML20932-LWA-626-SAF delivered?
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Can I return it if it doesn’t work for me?
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Does the Corbin Russwin ML20932-LWA-626-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20932-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 ML20932-LWA-626-SAF?
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