Corbin Russwin ML20906 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,043.55
$604.36
Corbin Russwin ML20906 Fail Safe Electrified Mortise Lock, Outside Grip Locked when Energized, Outside Cylinder Override, Lever x Lever Body Only

Corbin Russwin ML20906 Grade 1 Fail Safe Electrified Mortise Lock, Outside Grip Locked when Energized, Outside Cylinder Override, Lever x Lever Body Only

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Model: ML20906-LL-626-SAF
From the ML2000_Series Collection
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,043.55
$604.36
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Corbin Russwin ML20906-LL-SAF Fail Safe Electrified Mortise Lock with Outside Grip Locked When Energized and Cylinder Override, Lever x Lever Body Only

Grade 1 Electrified Mortise Lockbody for High-Traffic Commercial Applications

The Corbin Russwin ML20906-LL-SAF is a fail safe electrified mortise lockbody from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government environments. This lockbody features outside grip locking when energized, with latchbolt operation by grip from either side when de-energized, and an outside cylinder override for key access when the lock is energized. Constructed of heavy-gauge steel with a 1" stainless steel deadbolt and patented Quick Reversible latchbolt, the ML20906 is designed for 1-3/4" (44mm) standard door thickness and draws 500mA peak / 15mA holding current. The ML2000 Series has achieved UL cycle testing above and beyond requirements, completing over 14.5 million cycles (Verification ID: V875753), and carries a 10-year limited warranty.

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 Hospitality Properties
  • Industrial and Government Facilities
  • Multi-Tenant Residential and Mixed-Use Properties
  • High-Traffic Institutional Environments

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locks deliver professional-grade reliability backed by heavy-gauge steel construction, a 1" stainless steel deadbolt, and UL cycle testing verified at over 14.5 million cycles (Verification ID: V875753). The ML20906-LL-SAF is covered by a 10 Year Limited warranty, providing long-term confidence for facility managers and security professionals. Engineered for the most demanding commercial, institutional, and government applications where dependable fail safe performance and life safety 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 Safe
Product Attribute:
Mortise Locks
Electronic:
No
AMP Draw:
500mA Peak, 15mA Holding
Product Model:
ML20906
Collection:
ML2000_Series
Product Function:
Fail Safe
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 ML20906-LL-626-SAF – Frequently Asked Questions

1) What does fail safe mean on the Corbin Russwin ML20906 mortise lock, and what happens when the power drops?
On the ML20906, energizing the lock locks the outside grip. Cut the power and the latchbolt operates by grip from either side, so the opening is free on both sides during a power failure. That is the configuration used where egress and free access must be maintained if power is lost. While it is energized, an outside cylinder override gives key access. If you need the opposite behavior (locked on loss of power), a fail secure mortise body is the one to spec instead.
2) How much current does the ML20906 electrified mortise lock draw for sizing a power supply?
Budget 500mA peak inrush and 15mA holding per lock. Size the supply for the peak on all locks that could actuate at once, not the holding figure, and remember this is a continuous-duty fail safe device: it is energized whenever the opening is meant to be locked outside.
3) Will the ML20906 fit a 1-3/4 inch commercial door, and what mortise pocket does it need?
1-3/4 inch (44mm) is the standard door thickness for this lockbody, with optional thicknesses available from the series. Backset is 2-3/4 inch and the heavy gauge steel lockcase measures 5-7/8 x 4 x 15/16 inches, with an 8 x 1-1/4 inch armored front. That is the standard ANSI mortise pocket, so it drops into an existing ML2000 prep. You will also need to run wire to the lock edge, which a non-electrified prep will not have.
4) Will the ML20906 latch into my existing ANSI mortise strike?
The standard strike is an ANSI straight lip, 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center. The latchbolt is a two-piece anti-friction type with 3/4 inch (19mm) throw, the auxiliary deadlocking latch has 9/16 inch effective throw, and the one-piece stainless deadbolt throws 1 inch. If your frame already carries an ANSI 4-7/8 inch strike with a deadbolt cutout, the throws line up.
5) Does the ML20906 include levers, trim, cylinder and strike, or just the lock body?
Body only. The ML20906-LL-SAF is the lever x lever mortise lockbody; levers, roses or escutcheons, the cylinder and the strike are ordered separately. Trim options across the series include Museo, Vineyard and Behavioral Health (BHSS/BLSS), plus status indicator trim for locked/unlocked visibility on sectional and escutcheon designs.
6) What cylinder does the ML20906 take, and can I key it into my building's existing system?
Standard cylinder is brass, 6-pin, L4 keyway, 0-bitted. It works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders, so an integrator standardizing a building on a non-Corbin keyway is usually fine. Center to center is 3-5/8 inches lever to cylinder, and 2-7/16 inches lever to thumbturn.
7) Is the ML20906 rated for a fire door, and what grade is it?
ANSI/BHMA A156.13 Series 1000, Operational and Security Grade 1. It is UL/cUL listed to UL10C positive pressure for 3-hour fire doors up to 4 x 10 feet single or 8 x 10 feet pair, and also lists ADA A117.1, California State Fire Marshal, and windstorm/hurricane certification. UL cycle testing ran past 14.5 million cycles, Verification ID V875753.
8) Do I have to order the ML20906 handed, or can I re-hand it in the field?
Handing is field reversible. The patented Quick Reversible latchbolt lets you change hand without opening the lock case, which matters if you are stocking spares for a building with mixed swings rather than a lock per door.
9) Should I add request-to-exit monitoring to the ML20906, and what does it do?
Request to exit is an option you pick at order time, yes or no. With RX, the lock signals the access control panel when the inside lever is turned so the system sees a legitimate egress instead of a forced-door alarm. Specify RX if the opening is monitored by an alarmed access control system; skip it if the lock is simply power-controlled with no monitoring. Both choices are available across every finish offered.
10) What is a comparable Grade 1 mortise lock body if I am standardizing on a different brand?
The Accentra 8800FL Series mortise lock body is the cross-brand Grade 1 counterpart we carry, and it is also field reversible for handing. Note the difference in scope: the ML20906 is specifically an electrified fail safe body with outside cylinder override and a 500mA peak draw, so if the opening is on access control, confirm the Accentra body you pick is the electrified fail safe variant rather than a mechanical one.
11) Can the ML20906 be ordered with electric latch retraction for a card reader opening?
Motorized Electric Latch Retraction (MELR) is offered on the ML20900 series, which is the electrified family the ML20906 belongs to. MELR pulls the latch back so the door pushes open freely, which is what you want on a vestibule or an automatic operator. The ML20906 as configured controls the outside grip electrically instead, with the latch still operated by lever, so pick MELR only if the door needs to be genuinely free-swinging.
12) For standardizing a facility on one Grade 1 mortise platform, how do the Corbin Russwin ML2000 and Accentra 8800FL bodies line up?
Both meet ANSI/BHMA Grade 1 for mortise lock bodies and both are handed but field reversible, so either can be stocked without splitting inventory by hand. The ML20906 sits in the Corbin Russwin ML2000 series and is supplied as a lockbody only with a 1-3/4 inch standard door thickness, so trim and cylinders are ordered separately; the Accentra 8800FL is a separate series and its trim and keying follow its own platform.
13) What finishes does the ML20906 mortise lock come in?
Fourteen finishes: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 satin bronze oil-rubbed, 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. 626 satin chrome and 630 satin stainless are the usual commercial defaults if you are matching existing institutional hardware. Substrate is brass or bronze.
How fast can I get the Corbin Russwin ML20906-LL-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 ML20906-LL-626-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20906-LL-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 ML20906-LL-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 ML20906-LL-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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