Corbin Russwin DL4112 Grade 1 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$615.62
$352.91
Corbin Russwin DL4112 Grade 1 Mortise Deadlock, Double Cylinder

Corbin Russwin DL4112 Grade 1 Mortise Deadlock, Double Cylinder

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Model: DL4112 626
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$615.62
$352.91
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Corbin Russwin DL4112-KEYED Mortise Deadlock Double Cylinder with Hardened Steel Deadbolt

Commercial-Grade Mortise Deadlock with Double Cylinder Keyed Function

The Corbin Russwin DL4112-KEYED is a heavy-duty commercial mortise deadlock from the DL4100 Series, engineered for demanding applications requiring keyed access from either side of the door. This double cylinder mortise deadlock features a steel deadbolt with hardened pin and a full 1" (25mm) throw, providing robust security for commercial door openings. Designed for standard door thicknesses of 1-3/4" (44mm) with optional thicknesses available, and a standard backset of 2-3/4" (70mm), the DL4112-KEYED accommodates a wide range of door configurations. The non-handed design simplifies installation across left- and right-hand applications, while the adjustable front accommodates both flat and beveled doors with a bevel adjustment of 1/8" (3mm) in 2" (51mm).

Professional Features & Benefits

  • Door Thickness Compatibility: Standard door thickness of 1-3/4" (44mm) with optional door thicknesses available via Quick Codes, accommodating a range of 1-3/4" to 2-1/4" for versatile commercial installations.
  • Standard Backset: 2-3/4" (70mm) standard backset ensures compatibility with common door preparations and simplifies installation in new and retrofit applications.
  • Hardened Steel Deadbolt: Steel deadbolt with hardened pin delivers a full 1" (25mm) throw for superior resistance to forced entry in commercial security applications.
  • Heavy-Duty Lockcase Construction: Heavy wrought steel lockcase with zinc dichromate finish provides exceptional durability and corrosion resistance for long-term performance.
  • Adjustable Front Plate: Brass, bronze, or stainless steel front measuring 4-5/8" (117mm) x 1-1/8" (29mm), adjustable for flat or beveled doors with a bevel adjustment of 1/8" (3mm) in 2" (51mm).
  • Standard Strike: Wrought brass or bronze strike measuring 3-1/2" (89mm) x 1-1/8" (29mm); optional strikes also available for specialized applications.
  • Conventional 6-Pin Cylinder: Brass, 6-pin cylinder with L4 keyway, 0-bitted as standard; security cylinders available via Quick Codes. Includes two nickel silver keys standard.
  • Extensive Keying Options: Supports master keying, construction master keying, 7-pin (FC) conventional, interchangeable core (IC), security, visual key control, concealed key control, Pyramid (FC), and Pyramid (IC) configurations.
  • Non-Handed Design: Non-handed configuration eliminates handing concerns during ordering and installation, reducing errors and simplifying inventory management.
  • Manufacturer Warranty: 1 Year Limited warranty for added confidence and protection.

Technical Specifications

  • Subcategory: Deadlocks
  • Product Group: Mechanical Locks
  • Series: DL4100 Series
  • Keyed Function: Double Cylinder
  • Standard Cylinder: Conventional 6-pin Cylinder, L4 Keyway
  • Standard Latch: Deadbolt: Steel with hardened pin, 1" Throw
  • Standard Strike: 3-1/2" x 1-1/8"
  • Warranty: 1 Year Limited
  • ANSI/BHMA: E6060 Series
  • Product Subgroup: Mortise Locks and Trim
  • Product Type: Mortise Deadlocks
  • Keyed: Yes
  • Commercial/Residential: Commercial
  • Function Description: By key either side
  • Lock Type: Mortise
  • Lock Function: Double Cylinder
  • Product Model: DL4112
  • Product Function: Double Cylinder
  • Door Hand Direction: Non-Handed
  • Door Thickness Range: 1-3/4" to 2-1/4"
  • Product Category: Mechanical Locks
  • Backset (Distance): 2-3/4"
  • Department: Door Hardware

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Corbin Russwin Quality?

Corbin Russwin mortise deadlock products deliver professional-grade reliability with heavy wrought steel lockcase construction featuring zinc dichromate finish and a hardened steel deadbolt with a full 1" (25mm) throw. The DL4100 Series meets ANSI/BHMA E6060 Series standards, ensuring compliance with commercial door hardware requirements. Backed by a 1 Year Limited warranty and an extensive range of keying options, Corbin Russwin mortise deadlocks are engineered for demanding commercial applications where dependable security performance is essential.

Manufacturer Resources

Corbin Russwin Condensed Catalog

Product Specs

Subcategory:
Deadlocks
Product Group:
Mechanical Locks
Series:
DL4100 Series
Keyed Function:
Double Cylinder
Standard Cylinder:
Conventional 6-pin Cylinder, L4 Keyway
Standard Latch:
Deadbolt: Steel with hardened pin, 1" Throw
Standard Strike:
3-1/2" x 1-1/8"
Warranty:
1 Year Limited
ANSI/BHMA:
E6060 Series
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Deadlocks
Keyed:
Yes
Commercial/Residential:
Commercial
Function Description:
By key either side
Lock Type:
Mortise
Lock Function:
Double Cylinder
Product Model:
DL4112
Product Function:
Double Cylinder
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/4" to 2-1/4"
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

Corbin Russwin DL4112 626 – Frequently Asked Questions

1) Will the Corbin Russwin DL4112 mortise deadlock fit a 1-3/4 inch commercial door?
Yes, 1-3/4 inches is the standard door thickness for the DL4112, and the lock is offered for doors from 1-3/4 up to 2-1/4 inches thick. The mortise pocket needs to be cut for a 2-3/4 inch backset. If your doors run thicker than 1-3/4, specify the thickness when you order so the correct spindle-free deadbolt case and front are supplied.
2) Does the DL4112 deadlock need to be ordered left hand or right hand?
No handing to specify. The DL4112 is non-handed, so the same lock works on a left hand or right hand opening. The front plate is adjustable for flat or beveled door edges, with a 1/8 inch bevel in 2 inches, so you are not ordering a separate part for a beveled stile either.
3) Is the DL4112 keyed on both sides, or key outside and thumbturn inside?
Key both sides. The DL4112 is the double cylinder function, operated by key from either side, with no thumbturn. That is the version used where there is glass near the lock or where you do not want free egress by turning a knob. If you need thumbturn egress from the inside, you want a single cylinder deadlock from the same DL4100 family instead, not this model.
4) What is the deadbolt throw on the Corbin Russwin DL4112, and will it reach my existing strike?
The deadbolt is steel with a hardened pin and throws a full 1 inch. Paired with the 2-3/4 inch backset, that means the existing jamb pocket has to be deep enough for a full inch of bolt. The standard strike supplied measures 3-1/2 by 1-1/8 inches, so if your frame is prepped for a common ANSI 4-7/8 inch strike you will be enlarging or filling the frame cutout.
5) Can I get the DL4112 deadlock less cylinder so I can key it into my existing system?
Yes, and there are three ways to do it. LC ships less conventional cylinder if you are supplying your own mortise cylinders. CL6 ships less core for a Corbin Russwin 6-pin large format interchangeable core. CL7 ships less core for a 7-pin IC. Order the standard configuration instead and you get a brass conventional 6-pin cylinder in the L4 keyway, 0-bitted, with two nickel silver keys.
6) Is a mortise deadlock like the DL4112 the right choice, or should I use a bored deadbolt?
A mortise deadlock goes in a pocket routed into the door edge, not a round cross-bore, so it is what you use when the door is already mortise-prepped or when you want the bolt case fully inside the stile. A bored tubular deadbolt is the simpler retrofit on a door with a 2-1/8 inch cross-bore. The DL4112 is also a deadlock only, meaning no latch and no lever, so it is meant to sit above a separate latching device or on a door where the bolt is the only securing hardware.
7) Can the DL4112 be master keyed into a building system?
Yes. The DL4100 deadlocks support master keying and construction master keying, 7-pin FC conventional, interchangeable core, security cylinders, visual key control, concealed key control, and Pyramid in both FC and IC. Standard cylinders ship 0-bitted, so a locksmith can pin them to an existing system on arrival.
8) What finishes does the DL4112 mortise deadlock come in?
Seven finishes: 605 bright brass, 606 satin brass, 612 satin bronze, 613 oil-rubbed satin bronze, 625 bright chrome, 626 satin chrome, and BSP black suede powder coat. Every one of those is available with any of the cylinder options, so a property manager standardizing on 626 across a building can still mix conventional cylinders on some doors and IC prep on others.
9) What is the lock case and front plate on the DL4112 made of?
Heavy wrought steel case with a zinc dichromate coating for corrosion resistance. The front is brass, bronze, or stainless steel depending on the finish, measuring 4-5/8 by 1-1/8 inches, and the standard strike is wrought brass or bronze at 3-1/2 by 1-1/8 inches. Those front dimensions are what to check against an existing mortise pocket before you pull the old lock.
How fast can I get the Corbin Russwin DL4112 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 DL4112 626 come with a warranty?
Absolutely. The Corbin Russwin DL4112 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 DL4112 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 DL4112 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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