Schlage Electronics 46929178-1...
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$276.00
$265.75
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Schlage Electronics 46929178-138 AD Series Mortise Door Thickness Kit for 1-3/8" Thick Doors

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Model: 46929178-138

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

$276.00
$265.75
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Schlage Electronics 46929178-138 AD Series Mortise Door Thickness Kit for 1-3/8" Thick Doors

The Schlage Electronics 46929178-138 is an AD Series Mortise Door Thickness Kit engineered specifically for doors measuring 1-3/8" in thickness. Designed as a precise installation accessory for the Schlage Electronics AD and CO Series product lines, this kit ensures proper mortise lock fitment and alignment on thinner commercial door profiles. Built to Schlage Electronics' commercial-grade standards, this component provides the dimensional compensation necessary for reliable, code-compliant mortise lock installation.

Key Features

  • Door Thickness Compatibility: Specifically engineered for 1-3/8" thick doors, ensuring precise fitment and proper mortise lock function on thinner door profiles.
  • AD and CO Series Compatible: Designed for use with Schlage Electronics AD and CO Series mortise lock systems, providing broad compatibility across the product family.
  • Installation Accessory: Functions as a door thickness kit to bridge dimensional gaps between standard mortise hardware and 1-3/8" door construction, supporting accurate alignment and secure mounting.
  • Commercial-Grade Quality: Manufactured to commercial application standards, suitable for demanding institutional and commercial environments.
  • Purpose-Built Component: Engineered as an OEM installation accessory, ensuring consistent performance and fit when paired with compatible Schlage Electronics AD and CO Series devices.

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: Electrical Accessories
  • Parts and Accessories Type: Installation Accessories
  • Commercial/Residential: Commercial
  • Product Model: 46929178-138
  • Features: Schlage Electronics AD and CO Series Parts

Typical Applications

  • Commercial Office Buildings with 1-3/8" Door Construction
  • Educational Facilities Requiring AD or CO Series Mortise Locks
  • Healthcare Institutions with Thinner Interior Door Profiles
  • Retail Establishments with Standard Interior Door Assemblies
  • Government and Municipal Buildings Using Schlage Electronics Access Hardware
  • Multi-Tenant Residential Properties with Commercial-Grade Entry Systems
  • Industrial Facilities Upgrading or Servicing AD Series Mortise Lock Installations

Why Schlage Electronics AD Series?

Schlage Electronics AD and CO Series components are purpose-built for commercial-grade mortise lock applications, delivering precise dimensional compatibility and reliable performance across a wide range of door configurations. This 46929178-138 door thickness kit reflects the engineering rigor that professionals depend on when specifying and installing access hardware in demanding commercial environments where proper fitment is critical to long-term operation.

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:
Electrical Accessories
Parts and Accessories Type:
Installation Accessories
Commercial/Residential:
Commercial
Product Model:
46929178-138
Features:
Schlage Electronics AD and CO Series Parts

Schlage Electronics 46929178-138 – Frequently Asked Questions

1) What does the Schlage 46929178-138 door thickness kit actually do?
It is the spacer/hardware kit that adapts a Schlage Electronics AD or CO Series mortise lock to a 1-3/8 inch thick door. Standard commercial mortise hardware is built around a 1-3/4 inch door, so on a thinner leaf you need this kit to take up the dimensional difference and keep the lock body, trim, and spindles aligned and properly mounted. It is an installation accessory only, not a lock.
2) My AD Series mortise lock is going on a 1-3/4 inch door. Do I need this kit?
No. The 46929178-138 is only for 1-3/8 inch doors. AD and CO Series mortise locks ship set up for the standard 1-3/4 inch commercial door, so on that thickness you order nothing extra. Buy this kit only when the leaf measures 1-3/8 inches.
3) Will this thickness kit work with a Schlage CO Series mortise lock, or is it AD Series only?
It covers both. The 46929178-138 is listed as an AD and CO Series part, so it serves the offline CO Series mortise locks as well as the AD Series networked and standalone mortise units.
4) We standardize on Schlage AD Series across a building with some older 1-3/8 inch interior doors. What do we add to those openings?
Order the 46929178-138 thickness kit for each 1-3/8 inch leaf and keep the same AD or CO Series mortise lock you are using everywhere else. That way the fleet stays on one lock model and one credential platform, and only the thin doors carry the extra kit. 1-3/8 inch is the common older interior door thickness, so it is typically a handful of openings rather than the whole building.
5) Does this kit include the mortise lock or any trim?
No lock, no lever, no cylinder. The 46929178-138 is strictly the door thickness kit for 1-3/8 inch doors. You still order the AD or CO Series mortise lock, the trim, and the cylinder separately.
6) Is the 46929178-138 a genuine Schlage part or an aftermarket spacer?
It is a Schlage Electronics OEM installation accessory, model 46929178-138, built for the AD and CO Series mortise platform and rated for commercial use. Distributors ordering by number should use 46929178-138 with the -138 suffix indicating the 1-3/8 inch door application.
How fast can I get the Schlage Electronics 46929178-138 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 Schlage Electronics 46929178-138 come with a warranty?
Absolutely. The Schlage Electronics 46929178-138 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 Schlage Electronics 46929178-138?
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 Schlage Electronics 46929178-138 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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