Corbin Russwin ML2020 Grade 1 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$713.21
$308.71
Corbin Russwin Corbin Russwin ML2020 Privacy, Bedroom or Bathroom - Mortise Lockbody Only COR-ML2020-LL

Corbin Russwin ML2020 Grade 1 Privacy, Bedroom or Bathroom - Mortise Lockbody Only

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Model: COR-ML2020-LL-626
From the ML2000_Series Collection
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$713.21
$308.71
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Corbin Russwin ML2020-LL Privacy Mortise Lockbody for Bedroom and Bathroom Applications

Grade 1 Commercial Mortise Lock with ANSI F02 Privacy Function

The Corbin Russwin ML2020-LL is a Grade 1 commercial mortise lockbody engineered for privacy applications in bedroom and bathroom settings, operating under ANSI function F02. Built from heavy-gauge steel with a 1" stainless steel deadbolt and patented Quick Reversible latchbolt, this lockbody is designed for 1-3/4" (44mm) standard door thickness and is field reversible for flexible installation. The ML2020-LL is part of the ML2000 Series, a platform proven in high-traffic commercial, institutional, industrial, and government environments.

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
  • Healthcare Institutions and Hospitals
  • Hotel and Hospitality Properties
  • Retail Establishments
  • Industrial and Government Facilities
  • Multi-Tenant Residential and Institutional Properties

Tamper-Resistant Design

The ML2000VR (Vandal Resistant) Series variant features vandal-resistant stainless steel escutcheons with tapered edges and Torx® pin tamper-resistant screws, providing an additional layer of security against abuse and unauthorized access. When paired with Corbin Russwin patented high-security Pyramid or Access 3® cylinders, any door becomes a formidable barrier to intruders.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise lockbodies deliver professional-grade reliability with heavy-gauge steel construction and a 1" stainless steel deadbolt, UL cycle tested to an exceptional 14.5 Million Cycles (Verification ID: V875753). Backed by a 10 Year Limited warranty, the ML2020-LL is engineered for demanding commercial applications where dependable privacy function and long-term performance are essential.

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Grade:
Grade 1
Keyed Function:
Non-Keyed
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
ANSI/BHMA:
F02
Product Subgroup:
Mortise Lock Bodies
Product Type:
Mortise Lockbody Only
Keyed:
No
Commercial/Residential:
Commercial
Function Description:
Mortise Lockbody Only
Lock Type:
Mortise
Lock Function:
Privacy/Bed/Bath
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
ML2020
Collection:
ML2000_Series
Product Function:
Privacy/Bed/Bath
Door Hand Direction:
Field Reversible
Door Thickness Range:
1-3/4"
Product Category:
Mechanical Locks
Product Substrate:
Brass or Bronze
Department:
Door Hardware

Corbin Russwin COR-ML2020-LL-626 – Frequently Asked Questions

1) What does the Corbin Russwin ML2020 mortise lock actually do, and is it keyed?
The ML2020 is a privacy function lockbody, ANSI F02, for bedroom and bathroom doors. It is non-keyed: you lock it from inside with a thumbturn, and there's no cylinder keying it from the corridor side. If you need a keyed office or classroom function, the ML2020 is the wrong number in the ML2000 family.
2) What exactly comes in the box with the ML2020-LL, and what else do I need to order?
Lockbody only. The ML2020-LL ships as the mortise case itself, so the trim (lever or knob set with the inside thumbturn and outside emergency release), the armored front and the strike are ordered separately as part of the ML2000 trim program. Buying the body alone makes sense when you are replacing a failed case and keeping the existing trim on the door; if you are outfitting a new opening, you need the trim package too.
3) Will the Corbin Russwin ML2020 fit a 1-3/4 inch door, and do I have to specify the hand?
1-3/4 inches (44mm) is the standard door thickness for the ML2020, which is the usual commercial door. Handing is not something you have to get right on the order: the case is field reversible using the patented Quick Reversible latchbolt, so the hand is changed without opening the lock case. That matters if you are stocking spares for a building with doors swinging both ways, one part number covers all four hands.
4) Will the ML2020 latch into the strike that's already in my frame?
It depends on the strike prep. The latchbolt is a two-piece anti-friction unit with a 3/4 inch (19mm) throw, backed by a 9/16 inch deadlocking auxiliary latch, and the deadbolt throws a full 1 inch. The standard strike is an ANSI straight lip, 4-7/8 x 1-1/4 inches with a 1-1/8 inch lip to center. If your frame already carries an ANSI straight lip strike of that size from another mortise lock, the throws will engage it. A non-ANSI or box-style strike from a bored lock will not.
5) What's the backset and case size on the ML2020, and will it drop into an existing mortise pocket?
The backset is 2-3/4 inches (70mm) and the heavy-gauge steel case measures 5-7/8 x 4 x 15/16 inches. The armored front is 8 x 1-1/4 inches. Those are the standard ANSI mortise pocket numbers, so on a door already prepped for a 2-3/4 inch backset mortise lock the case drops in. Check the trim spacing too: knob or lever to cylinder is 3-5/8 inches center to center, and lever to thumbturn is 2-7/16 inches.
6) Is the ML2020 privacy lock rated for a fire door?
Yes. The ML2000 mortise locks are UL/cUL listed and tested to UL10C positive pressure, good for 3-hour fire doors up to 4' x 10' single or 8' x 10' pair. They also meet ADA A117.1 and carry California State Fire Marshal listing. Worth noting for a bathroom application: the privacy function itself is not fire-rated separately, the rating belongs to the lock as installed with its listed trim and strike.
7) What is the cross-brand equivalent to the Corbin Russwin ML2020-LL privacy mortise lockbody?
The closest cross-brand counterpart is the Accentra 8800FL Series Grade 1 mortise lock body with field reversible handing. Both are Grade 1 mortise lock bodies, and both handle handing in the field rather than requiring a hand-specific order: the ML2020-LL is field reversible, and the 8800FL body is described the same way. The ML2020-LL is the privacy/bed/bath configuration, ANSI F02, non-keyed, so when you cross to the 8800FL Series you need to specify the privacy function body in that series rather than assuming the series number alone matches. Both are lock bodies only, so trim, cylinder where applicable, and strike are ordered separately in either direction.
8) Can an Accentra 8800FL mortise lock body drop into a door prepped for a Corbin Russwin ML2020?
Treat it as a new prep check, not a drop-in. Both the Corbin Russwin ML2020-LL and the Accentra 8800FL Series are Grade 1 mortise lock bodies with field reversible handing, but mortise case dimensions, armored front size, cylinder and thumbturn spacing, and strike lip dimensions are what decide whether a body seats in an existing pocket. The ML2020-LL runs a 3/4 inch latchbolt and an ANSI straight lip strike measuring 4-7/8 inch by 1-1/4 inch with 1-1/8 inch lip to center. Confirm the Accentra body's case and front against the existing mortise pocket and faceplate cutout before committing, and confirm the strike prep in the frame matches. If the door is already prepped for the ML2000 Series, staying with the ML2020-LL keeps the pocket, front, and strike prep unchanged.
9) Is a Grade 1 mortise lock overkill for a bathroom door, or should I use a bored privacy lock?
For a house or a light-duty interior door, a bored privacy set is the cheaper and simpler answer. The ML2020 earns its place where the traffic is heavy: it is ANSI/BHMA A156.13 Series 1000 Grade 1 for both operation and security, UL cycle tested to 14.5 million cycles, and it is built for commercial, institutional and government openings. Dorm bathrooms, hospital patient rooms, hotel baths and school restrooms are where a mortise privacy case pays for itself. A residential closet is not.
10) Can I use the ML2020 lockbody with the levers and escutcheons I already have on my Corbin Russwin doors?
The ML2000 platform takes the full Corbin Russwin trim range, including Museo, Vineyard and the Behavioral Health BHSS and BLSS trims, plus status indicator trims in sectional and escutcheon styles that show locked or unlocked at a glance. That indicator option is the one property managers and healthcare facilities ask about most on privacy doors. Trim is thru-bolted for alignment.
11) What's the alternative to a Corbin Russwin ML2020 if I want a Grade 1 mortise lock body from another brand?
The Accentra 8800FL Series mortise lock body is the other Grade 1 mortise case we carry, and like the ML2020 it is field reversible for handing. The practical difference is the ecosystem: the ML2020 is built around the Corbin Russwin ML2000 trim and keying program, so if the rest of your building is ML2000 you keep the trim and the spares common by staying with it. If you are already an 8800 house, cross to the 8800FL body instead. Mixing mortise brands on the same opening does not work, the trim and case are not interchangeable.
12) If I need a keyed mortise function instead of privacy, is the Accentra 8800FL body the right substitute?
Switching brands is not what solves that. The Corbin Russwin ML2020-LL is the non-keyed privacy/bed/bath function under ANSI F02, so if the opening needs a keyed function the answer is a different function body, not a different manufacturer. Within the ML2000 Series the keyed functions are ordered as their own model numbers, which keeps the door prep, 2-3/4 inch backset, and ANSI straight lip strike consistent with the rest of the openings on the same series. The Accentra 8800FL Series is a Grade 1 mortise lock body with field reversible handing and is a reasonable cross-brand family to spec if you are standardizing on Accentra across the whole job, but you would still be selecting a keyed function body inside that series, and the door and frame prep would need to be verified against it.
13) For a hospital or dormitory bathroom door that needs a Grade 1 privacy mortise lock, which body should be specified?
The Corbin Russwin ML2020-LL is built for exactly that opening: ANSI/BHMA Grade 1, ANSI F02 privacy function, commercial rated, for 1-3/4 inch doors, with a 2-3/4 inch backset and UL/cUL UL10C 3-hour positive pressure fire listing. The alternative Grade 1 mortise body family is the Accentra 8800FL Series, also a Grade 1 mortise lock body with field reversible handing; specifying it means selecting the privacy function within that series and verifying the fire listing required for the opening. Where an existing facility is already standardized on ML2000 Series bodies, keeping the ML2020-LL means one parts manual, one strike, and one set of spare bodies across the building.
14) I need to match the ML2020 to the finishes already on my building's doors. What finishes does the privacy lockbody come in?
Fourteen finishes across the brass, bronze, nickel, chrome and stainless families: 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. For most commercial work 626 satin chrome and 630 satin stainless are the two that match existing openings.
15) Is there an electrified or access control version of the ML2020 privacy lock?
The ML2020 itself is a mechanical, non-electronic lockbody. Electrification exists in the family but not on this function: Motorized Electric Latch Retraction is offered on the ML20900 series. Privacy functions are mechanical by nature, since the point is that the occupant controls the lock from inside, so if you need credential control on that opening you are looking at a different function entirely.
16) What is the ML2020 lockbody made of, and will it hold up in a high-abuse restroom?
Heavy-gauge steel case, brass or bronze substrate on the exposed components, one-piece stainless steel deadbolt. The two-piece latchbolt carries an anti-friction insert so it takes less force to close, which matters on doors that get slammed all day. For openings that see real abuse, the ML2000VR vandal resistant variant adds stainless escutcheons with tapered edges and Torx pin tamper-resistant screws.
How fast can I get the Corbin Russwin COR-ML2020-LL-626 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 COR-ML2020-LL-626 come with a warranty?
Absolutely. The Corbin Russwin COR-ML2020-LL-626 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 COR-ML2020-LL-626?
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 COR-ML2020-LL-626 from ZenSupply?
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