Corbin Russwin ML2072 Grade 1 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,774.99
$1,031.75
Corbin Russwin Corbin Russwin ML2072 Mortise Classroom Intruder Lockset COR-ML2072-KEYED

Corbin Russwin ML2072 Grade 1 Mortise Classroom Intruder Lockset

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Model: COR-ML2072-NSA-626
From the ML2000_Series Collection
$1,774.99
$1,031.75
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  • Corbin Russwin ADDER-CORBIN RUSSWIN-[KEYING]=KD - Keyed Different ADDER-CORBIN RUSSWIN-[KEYING]=KD - Keyed Different
  • Corbin Russwin ADDER-CORBIN RUSSWIN-[KEYING]=KA - Keyed Alike ADDER-CORBIN RUSSWIN-[KEYING]=KA - Keyed Alike

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,774.99
$1,031.75
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Corbin Russwin ML2072-KEYED Mortise Classroom Intruder Lock Grade 1, Field Reversible, 10-Year Warranty

Commercial-Grade Classroom Intruder Security for High-Traffic Institutional Applications

The Corbin Russwin ML2072-KEYED is a Grade 1 mortise classroom intruder lockset from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government environments. Designed for 1-3/4" (44mm) standard door thickness, this lockset features a patented Quick Reversible latchbolt and a 1" stainless steel deadbolt, providing life safety and security in a single door preparation. The latchbolt operates freely by grip from either side unless the outside grip is locked by projection of the deadbolt, while the inside grip simultaneously retracts both the latchbolt and deadbolt for immediate egress. The ML2072 has been UL cycle tested above and beyond requirements, completing 14.5 Million Cycles (Verification ID: V875753), making it an ideal choice for offices, schools, hospitals, hotels, and other high-use 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

  • K-12 Schools and Educational Facilities
  • College and University Campus Buildings
  • Healthcare Institutions and Hospitals
  • Commercial Office Buildings
  • Government and Municipal Buildings
  • Hotels and Hospitality Properties
  • Industrial and Institutional Facilities

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 a formidable barrier against abuse and unauthorized manipulation. When paired with Corbin Russwin patented high-security Pyramid or Access 3® cylinders, the ML2072 delivers a comprehensive intrusion-deterrent solution for any commercial door opening.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locks are constructed of heavy-gauge steel and have been UL cycle tested to an exceptional 14.5 Million Cycles (Verification ID: V875753), far exceeding standard requirements for Grade 1 commercial hardware. The ML2072-KEYED is backed by a 10 Year Limited warranty, reflecting Corbin Russwin's commitment to long-term performance and reliability. Engineered for the most demanding commercial, institutional, and government applications, the ML2000 Series delivers life safety and security in a single door preparation without compromise.

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Grade:
Grade 1
Keyed Function:
Double Cylinder
Standard Cylinder:
Conventional 6-pin, L4 Keyway, 0 Bitted Keying
Standard Strike:
ANSI straight lip standard, 4-7/8" x 1-1/4" x 1-1/8"
Warranty:
10 Year Limited
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Keyed:
Yes
Latch Throw:
3/4" Latchbolt, 1" Deadbolt
Commercial/Residential:
Commercial
Function Description:
Latchbolt by grip from either side unless outside grip is locked by projection of deadbolt. Deadbolt thrown or retracted by key from either side. Inside grip simultaneously retracts latchbolt and deadbolt, outside grip remains locked.
Lock Type:
Mortise
Lock Function:
Classroom Intruder
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
ML2072
Collection:
ML2000_Series
Product Function:
Classroom
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-ML2072-NSA-626 – Frequently Asked Questions

1) What is the ML2072 classroom intruder function?
The ML2072 provides classroom intruder lockdown capability. Outside lever is always locked. Inside lever always retracts latch. Key unlocks outside lever. Designed for emergency lockdown situations while maintaining egress from inside.
2) What door thickness and backset does this lock accommodate?
Standard mortise locks fit 1-3/8" to 1-3/4" door thickness. Backset is typically 2-3/4". Verify exact specifications with manufacturer template before ordering. Door weight capacity varies by model.
3) Is this lock handed or universal?
Corbin Russwin mortise locks are typically field reversible for left or right hand doors. Lever handles and cylinder orientation can be adjusted during installation. Confirm handing requirements before installation.
4) What grade rating does the ML2072 carry?
Corbin Russwin mortise locks typically meet ANSI Grade 1 commercial standards. This includes cycle testing, strength requirements, and finish durability. Verify specific grade marking on product for code compliance.
5) Does this lock meet school security code requirements?
The ML2072 classroom function is designed for educational facilities. Check local fire and building codes for specific classroom door requirements. Some jurisdictions have restrictions on classroom door locking mechanisms.
6) What cylinder type is included?
Standard configuration includes removable core cylinder. Accepts standard large format interchangeable cores. Cylinder can be keyed to match existing school master key system. Core sold separately if not included.
7) Can this replace existing classroom door hardware?
Compatible with standard mortise lock prep. Existing mortise pocket may need adjustment for different manufacturers. Verify door preparation matches lock dimensions. Strike plate and keeper may require modification.
8) What tools are needed for installation?
Standard locksmith tools required. Mortise machine for new prep. Door template for accurate positioning. Drill bits for cylinder and mounting screws. Follow manufacturer installation instructions for proper operation.
9) How do you maintain mortise lock operation?
Regular lubrication of lock mechanism with graphite or approved lubricant. Check door alignment and strike adjustment periodically. Inspect lever return springs and latch operation. Clean excess buildup from lock case.
10) Are there similar classroom intruder functions available?
Other manufacturers offer comparable classroom intruder functions. Sargent 8272, Yale 8872, and Schlage L9072 provide similar operation. Function numbers may vary between brands. Verify exact operation before substituting.
11) Does this work with fire door assemblies?
Check fire door label for approved hardware listings. Lock must be listed with specific door manufacturer for fire rating compliance. Some classroom functions may conflict with fire egress requirements. Consult AHJ for approval.
12) What finish options are typically available?
Standard finishes include satin chrome, bright chrome, and oil rubbed bronze. Custom finishes may be available for large orders. Finish must match existing door hardware for consistent appearance. Verify finish availability before ordering.
How fast can I get the Corbin Russwin COR-ML2072-NSA-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-ML2072-NSA-626 come with a warranty?
Absolutely. The Corbin Russwin COR-ML2072-NSA-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-ML2072-NSA-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-ML2072-NSA-626 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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