Cal-Royal SLD234 SL Design UL ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$19.95
Cal-Royal Cal-Royal SL Design UL Deadlatch, 2-3/4" Backset SLD234

Cal-Royal SLD234 SL Design UL Deadlatch with 2-3/4" Backset

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Model: SLD234-26D
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$19.95
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Cal-Royal SLD234 SL Design UL Deadlatch with 2-3/4" Backset

The Cal-Royal SLD234 is a UL-listed dead latch from the SL Series, engineered with a 2-3/4" backset for precise fit and reliable commercial door hardware performance. This latch pairs with a 2-1/4" x 1" faceplate for clean, professional installation on commercial door assemblies. As a purpose-built latch component, the SLD234 is designed for compatibility with SL Series lock systems, making it an essential replacement or upgrade part for facility maintenance and hardware technicians working on commercial door hardware.

Key Features

  • Backset Specification: 2-3/4" backset ensures accurate alignment within SL Series lock preparations for a secure, dependable fit.
  • Faceplate Dimensions: 2-1/4" x 1" faceplate provides a clean, low-profile finish at the door edge.
  • Front Size Confirmation: Listed front size of 2-1/4" x 1-1/8" supports consistent fitment across SL Series door preparations.
  • UL-Listed Construction: UL listing on this dead latch supports compliance requirements for commercial and life-safety door applications.
  • SL Series Compatibility: Designed specifically for SL Design lock systems, simplifying replacement and ensuring proper mechanical fit.
  • Commercial-Grade Application: Classified for commercial use, suited to the demands of high-traffic institutional and business door hardware needs.

Certifications & Compliance

  • UL Listed

Technical Specifications

  • Subcategory: Commercial Locks Accessories
  • Product Group: Parts and Accessories
  • Product Subgroup: Latches
  • Product Type: Parts and Accessories
  • Commercial/Residential: Commercial
  • Front Size: 2-1/4" x 1-1/8"
  • Product Model: SLD234
  • Product Category: Parts and Accessories
  • Department: Door Hardware

Typical Applications

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

Why Cal-Royal SLD234?

Cal-Royal SL Series components deliver dependable commercial door hardware performance backed by UL listing for compliance-sensitive installations. The precise 2-3/4" backset and 2-1/4" x 1" faceplate specifications ensure this dead latch fits and functions correctly within its intended lock system, giving facility managers and installers confidence in a proper, professional-grade replacement part.

Product Specs

Subcategory:
Commercial Locks Accessories
Product Group:
Parts and Accessories
Product Subgroup:
Latches
Product Type:
Parts and Accessories
Commercial/Residential:
Commercial
Front Size:
2-1/4" x 1-1/8"
Product Model:
SLD234
Product Category:
Parts and Accessories
Backset (Distance):
2-3/4"
Department:
Door Hardware

Cal-Royal SLD234-26D – Frequently Asked Questions

1) What backset does the Cal-Royal SLD234 deadlatch use, and will it fit a door already bored for 2-3/8 inch?
The SLD234 is a 2-3/4 inch backset deadlatch, so it will not work in a door prepped at 2-3/8 inches. The two common commercial backsets are 2-3/8 and 2-3/4 inches, measured from the door edge to the center of the bore, and the latch has to match the existing prep. Measure from the edge of the door to the center of the lock hole before ordering; if that comes out at 2-3/8 inches, you need the shorter backset version of the SL Design latch instead.
2) Will the Cal-Royal SLD234 deadlatch work in any brand of cylindrical lock, or only Cal-Royal?
It is built for Cal-Royal SL Design lock systems. The latch is matched to the SL Series lock chassis and prep, so treat it as a Cal-Royal replacement part rather than a universal latch. Swapping it into another manufacturer's lockset is not something the SL Series latch is made for.
3) Is the Cal-Royal SLD234 deadlatch UL listed for use on fire-rated openings?
UL listed, yes. That is the compliance point that matters when a latch goes into a commercial or life-safety opening, and it is why maintenance departments in schools, hospitals and government buildings can specify the SL Design latch as a like-for-like replacement without opening up a code question.
4) Can an ABH 1890 roller latch be used in place of a Cal-Royal SLD234 deadlatch?
No - they do different jobs. The Cal-Royal SLD234 is a UL-listed dead latch built for SL Design lock systems, with a 2-3/4 inch backset and a 2-1/4 inch x 1-1/8 inch front. The ABH 1890 is a roller latch with a full lip cast strike and 5/16 inch adjustable projection, meaning it holds a door closed by spring pressure on a roller and releases with a push or pull. A roller latch has no latchbolt for a lock to throw and no deadlatching plunger, so it will not accept the SL Series lock trim the SLD234 is made for. Use the SLD234 where a keyed or lever lock has to operate the latch, and a roller latch only on a door that needs to be held shut rather than latched.
5) What size faceplate mortise does the Cal-Royal SLD234 latch need in the door edge?
The latch front measures 2-1/4 x 1-1/8 inches, and the description also gives a 2-1/4 x 1 inch faceplate. If your door edge is already mortised for an SL Series latch front, it drops straight in. On a fresh install, the edge mortise is cut to the latch front, not the other way around, so check the existing cutout against those numbers before you pull the old latch.
6) What is a deadlatch and do I need one instead of a plain spring latch on an exterior commercial door?
A deadlatch carries a small 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 stops a card or shim from loiding the door open. On any door where the latch edge is reachable from the outside, that is the latch you want. The SLD234 is the 2-3/4 inch backset deadlatch for Cal-Royal SL Design locks.
7) Does the Cal-Royal SLD234 deadlatch come with a strike plate?
The SLD234 is the latch unit itself, sold with its 2-1/4 x 1-1/8 inch front. If the existing strike in the frame is sound, you reuse it, which is the usual case on a latch swap. If you also need frame-side hardware, that is ordered separately. For a door where the problem is really the frame side rather than the latch, a roller latch and strike assembly such as the ABH 1890 Series with full lip cast strike is a different fix entirely.
8) My office door won't stay closed but the lock works fine. Is a deadlatch what I need, or something else?
If the lock throws and retracts correctly and the door is just drifting open, the latch is usually not the fault. A latch replacement like the SLD234 answers a worn or damaged latch inside an SL Design lock. For a non-latching door that only needs to be held shut, a roller latch is the different part, ABH offers the 1890 Series with a 5/16 inch adjustable projection and the 1895 Series with a T strike and 1/2 inch adjustable projection. Those hold a door closed by friction and give no security.
9) What is the difference between the ABH 1890 and ABH 1895 roller latches if a deadlatch is not what the opening needs?
Both are roller latches from ABH, and the difference is the strike and the amount of adjustment. The ABH 1890 comes with a full lip cast strike and 5/16 inch adjustable projection. The ABH 1895 comes with a T strike and 1/2 inch adjustable projection. The full lip strike wraps the jamb edge and suits a frame where the roller needs a lip to ride onto; the T strike is a flat mortised plate. The 1895 also gives twice the projection adjustment, which matters when the gap between door and frame is inconsistent across a run of openings. Neither one takes a lock body - if the door needs a lever or key to retract the latch, the Cal-Royal SLD234 dead latch is the part that does that.
10) Is a Securitron AOS or ABH 20020 armature part an alternative to a Cal-Royal SLD234?
No. The Securitron AOS is an armature offset strike and the ABH 20020 is a standard door armature head assembly with 1-5/8 inch projection - both are parts of an electromagnetic lock assembly, where a magnet holds a steel armature plate against the frame and releases it when power drops. The Cal-Royal SLD234 is a mechanical dead latch with a 2-3/4 inch backset that mortises into the door edge and is operated by SL Design lock trim. If the opening is on access control with a mag lock, the armature parts are what you replace; if the opening has a keyed SL Series lock in the door, the SLD234 is the latch inside it.
11) For a glass door, does the Cal-Royal SLD234 deadlatch work or is a different latching part needed?
The Cal-Royal SLD234 mortises into a door edge with a 2-3/4 inch backset and a 2-1/4 inch x 1-1/8 inch front, so it depends on a door thick enough to take that mortise. On a frameless glass door the equivalent part is a strike box such as the Codelocks CL4000-RSB, which suits the Codelocks CL4000 and CL4500 glass door locks. Those glass door locks bring their own latching, and the strike box gives the bolt somewhere to land. Specify the SLD234 for hollow metal or wood commercial doors running SL Design locks, and the glass door strike box where the leaf is glass.
12) What finishes does the Cal-Royal SLD234 SL Design deadlatch come in?
Five: US3 bright brass, US4 bright brass, US15 satin nickel, US26 polished chrome and US26D satin chrome. On a latch the finish only shows on the front at the door edge, so match it to the lockset you are servicing. For a building standardized on satin chrome trim, US26D is the one that disappears into the edge.
13) Is the Cal-Royal SLD234 latch rated for high-traffic commercial doors or is it a residential part?
Commercial. It is classified for commercial use and goes into SL Series locks on office buildings, schools, healthcare facilities, retail, warehouses, multi-tenant residential and municipal buildings. For a property manager keeping a stock of spares across a portfolio, one latch part number covers every SL Design opening on the 2-3/4 inch backset prep.
14) Is the Cal-Royal SLD234 deadlatch handed, or does it work on both left and right hand doors?
Cylindrical latches of this kind are non-handed in the sense that the latchbolt reverses, but the bolt must face the direction the door closes. Before installing, confirm the bevel of the latchbolt points toward the stop. The SL Design latch itself is specified only by backset, 2-3/4 inches, and front size, 2-1/4 x 1-1/8 inches, so those are the two numbers that decide fit on your opening.
How fast can I get the Cal-Royal SLD234-26D 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 Cal-Royal SLD234-26D come with a warranty?
Absolutely. The Cal-Royal SLD234-26D 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 Cal-Royal SLD234-26D?
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 Cal-Royal SLD234-26D from ZenSupply?
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Product Reviews

  • 5
    Great replacement

    Posted by Benjamin Wainberg on Jul 23rd 2025

    Direct replacement, worked like are charm!

!