Arrow 122 Deadlatch MK Series ...
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Arrow 122 Deadlatch MK Series Replacement Part, 2-3/4" Backset, 2-1/4" x 1" Face, Square Corner, Bright Brass, UL Listed

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Model: 122 26D

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

$51.66
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Arrow 122 Deadlatch MK Series Replacement Part, 2-3/4" Backset, Square Corner, Bright Brass, UL Listed

The Arrow 122 Deadlatch is a UL Listed replacement latch designed for the MK Series lockset platform, delivering dependable commercial-grade latching performance. Featuring a 2-3/4" backset and a 2-1/4" x 1" face plate with a square corner configuration, this deadlatch provides precise dimensional compatibility for direct replacement in existing MK Series installations. Finished in Bright Brass, it integrates seamlessly into commercial door hardware applications where a matching, specification-compliant latch component is required.

Key Features

  • Exact Backset Dimension: 2-3/4" backset ensures accurate alignment with standard commercial door preparations and MK Series lockset configurations.
  • Precise Face Plate Size: 2-1/4" x 1" face dimensions provide a proper fit in pre-mortised door edge preparations without modification.
  • Square Corner Face: Square corner configuration meets standard commercial door prep requirements for a clean, professional installation.
  • MK Series Compatibility: Engineered specifically for Arrow MK Series locksets, enabling straightforward like-for-like replacement without additional adaptation.
  • Bright Brass Finish: Coordinated Bright Brass finish maintains aesthetic consistency with existing MK Series hardware installations.
  • Commercial-Grade Construction: Built to commercial specification standards appropriate for demanding, high-traffic door applications.
  • UL Listed: UL listing confirms the component meets recognized safety and performance standards for door latch hardware.

Certifications & Compliance

  • UL Listed
  • Commercial Application Rated

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Latches
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: 122
  • Features: Arrow Parts

Typical Applications

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

Why Arrow 122?

Arrow has long supplied specification-grade door hardware components trusted by professional installers and facility maintenance teams across commercial environments. The Arrow 122 Deadlatch is engineered to MK Series dimensional standards with UL Listed certification, ensuring that replacement installations meet the same performance benchmarks as the original equipment. For facilities requiring precise, compliant latch replacement without compromise, this component delivers the exact fit and finish professionals depend on.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Latches
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
122
Features:
Arrow Parts

Arrow 122 26D – Frequently Asked Questions

1) Will the Arrow 122 deadlatch drop into my existing door prep without re-mortising?
If the door was prepped for an Arrow MK Series lockset, yes. The 122 uses a 2-3/4 inch backset and a 2-1/4 x 1 inch square corner faceplate, which matches the standard commercial edge prep MK Series locks are installed into. A door bored for a 2-3/8 inch backset will not take it, and a prep cut for a radius corner faceplate would need the corners squared up or a shim.
2) Is this an Arrow lockset or just the latch?
Just the latch. The 122 is a replacement latch component for the Arrow MK Series lockset platform, not a complete lock. You reuse the existing chassis, trim, cylinder and strike; this replaces the worn or damaged latch unit only.
3) What is the difference between the Arrow 122 deadlatch and the Kwikset 84290 square corner plainlatch?
Both are square corner latch replacements, but they are not interchangeable in the same door prep. The Arrow 122 is a deadlatch built to Arrow MK Series dimensions with a 2-3/4 inch backset and a 2-1/4 inch by 1 inch face. The Kwikset 84290 is a square corner plainlatch with a 2-3/8 inch backset. If the existing bore in the door is centered 2-3/4 inches from the door edge, the 2-3/8 inch latch will not reach the spindle hub, so match the backset before ordering.
4) Why a deadlatch instead of a plain latch on an exterior commercial door?
A deadlatch carries an auxiliary plunger alongside the main latchbolt. When the door closes, the plunger rides the strike and blocks the latchbolt from being pushed back, which is what defeats loiding (carding) the latch. Plain latches like the Kwikset 84290 square corner plainlatch have no such plunger and belong on interior or non-security openings. The Arrow 122 is the deadlatch version and is specified for commercial use.
5) Can I standardize on the Arrow 122 across a building with mixed door hardware?
Only across openings running Arrow MK Series locksets with a 2-3/4 inch backset and square corner edge prep. That combination is common in commercial office, school, healthcare, retail and multi-tenant buildings, so a portfolio standardized on MK Series can stock one latch in one finish. Openings with other lock platforms or a radius corner faceplate need their own latch.
6) Is the Emtek 83228 faceplate a substitute for the Arrow 122 deadlatch?
No. The Emtek 83228 is a faceplate and screws for a tubular pocket door privacy latch with square corners, so it supplies only the visible plate and fasteners. The Arrow 122 is the complete deadlatch mechanism with a 2-1/4 inch by 1 inch square corner face and a 2-3/4 inch backset for Arrow MK Series locksets. If the latch body itself is worn or the deadlocking plunger is failing, a faceplate will not restore function.
7) We are standardizing latch replacements across a facility and need a UL listed fire door latch. How does the Arrow 122 compare to the Kwikset RCAL latches?
The Arrow 122 deadlatch is UL Listed and specified for commercial applications, sized to Arrow MK Series prep at a 2-3/4 inch backset with a 2-1/4 inch by 1 inch square corner face. Kwikset offers the 83521 RCAL plain latch rated UL 3 hour for BBL, KNL, CNL and PLL trim, and the 83518 RCAL adjustable square drive latch also rated UL 3 hour. The Kwikset RCAL parts are tied to Kwikset lock families, so on Arrow MK Series locksets the 122 is the like-for-like component.
8) Can I use the Arrow 122 on an electrified or motorized lock, or is there a different latch for that?
The Arrow 122 is a mechanical deadlatch for Arrow MK Series locksets and has no electrified provision. For a motorized application, the Emtek LC9-DBLTCH is an EMPowered motorized deadbolt latch. That is a deadbolt latch function rather than a deadlatch for a cylindrical lockset, so it serves a different opening entirely and is not a retrofit into an MK Series prep.
9) What finishes does the Arrow 122 deadlatch come in?
Four: 605 Bright Brass, 612 Satin Bronze, 613 Satin Bronze Oil-Rubbed, and 626 Satin Chrome. Only the faceplate shows on the door edge, so match it to the lockset trim already on the opening rather than to the door.
10) Does the Arrow 122 deadlatch need to be handed?
Latch handing is set at install, not at order. There is one 122 deadlatch and you orient the latchbolt to the swing of the door before fitting it into the chassis. What you do have to get right when ordering is the 2-3/4 inch backset, the square corner faceplate, and the finish.
How fast can I get the Arrow 122 26D 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 Arrow 122 26D come with a warranty?
Absolutely. The Arrow 122 26D 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 Arrow 122 26D?
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 Arrow 122 26D 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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