Schlage Residential B489 Thick...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$35.80
$21.24
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Schlage Residential B489 Thick Door Kit for 1-7/8" to 2-1/2" Doors, Commercial Installation Accessory

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Model: B489-106

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

$35.80
$21.24
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Schlage Residential B489 Thick Door Kit for 1-7/8" to 2-1/2" Doors

The Schlage Residential B489 Thick Door Kit is a purpose-built installation accessory designed for commercial-grade mechanical lock applications on thick doors ranging from 1-7/8" to 2-1/2" in thickness. Part of the B489 Series, this function kit provides the essential components needed to adapt compatible Schlage lock hardware to oversized door thicknesses that exceed standard door dimensions. It is classified as a commercial installation accessory and is engineered to ensure proper fit and reliable performance in demanding environments.

Key Features

  • Thick Door Compatibility: Engineered specifically for doors measuring 1-7/8" to 2-1/2" in thickness, accommodating oversized door applications beyond standard residential dimensions.
  • B489 Series Design: Purpose-built as part of the Schlage B489 Series, ensuring precise compatibility with corresponding Schlage lock hardware and components.
  • Commercial-Grade Construction: Rated for commercial applications, providing the durability and reliability required in high-demand environments.
  • Function Kit Configuration: Delivered as a complete function kit, supplying all necessary installation accessory components for thick door adaptation in a single package.
  • Schlage Parts Quality: Manufactured to Schlage parts standards, ensuring consistent quality and proper fitment with the B489 Series lock family.
  • Installation Accessory Classification: Categorized as an installation accessory within the Parts and Accessories product group, simplifying procurement and compatibility verification for contractors and installers.

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: Function Kit
  • Parts and Accessories Type: Installation Accessories
  • Commercial/Residential: Commercial
  • Product Model: B489-106
  • Features: Schlage Parts

Typical Applications

  • Commercial Office Buildings with Thick Entry Doors
  • Educational Facilities Requiring Heavy-Duty Door Hardware
  • Healthcare Institutions with Oversized Door Construction
  • Retail Establishments with Non-Standard Door Thicknesses
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties with Commercial Door Standards
  • Government and Municipal Buildings

Why Schlage Residential B489?

Schlage Residential B489 Series parts and accessories are manufactured to the same exacting standards as the broader Schlage lock lineup, ensuring reliable compatibility and consistent performance across commercial door hardware installations. The B489 Thick Door Kit is engineered to address the specific demands of oversized door thicknesses from 1-7/8" to 2-1/2", making it an essential component for contractors and facility managers who require a dependable, manufacturer-approved solution for non-standard door applications.

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:
Function Kit
Parts and Accessories Type:
Installation Accessories
Commercial/Residential:
Commercial
Product Model:
B489-106
Features:
Schlage Parts

Schlage Residential B489-106 – Frequently Asked Questions

1) What does the Schlage B489 thick door kit actually do?
It's an installation accessory that adapts Schlage mechanical lock hardware to doors thicker than standard, covering 1-7/8 inch up to 2-1/2 inch. Standard commercial doors run 1-3/4 inch, and a lock built for that thickness won't have long enough spindles and screws to reach through a heavier door. The B489-106 kit supplies the parts needed to make that adaptation. It is not a lock itself, so you order it alongside the lockset.
2) My door is 1-3/4 inches thick. Do I need the B489 kit?
No. The B489 kit starts at 1-7/8 inches, and 1-3/4 inch is the standard commercial door thickness that Schlage locks already ship to fit out of the box. Buying the thick door kit for a 1-3/4 inch door would leave you with parts you can't use. It only earns its place once the door measures 1-7/8 inches or more, up to 2-1/2 inches.
3) Do I get a lockset with the Schlage B489 thick door kit, or just the adapter parts?
Just the adapter parts. The B489-106 ships as a function kit, which means the components needed for thick door adaptation in one package. The lock body, trim, and cylinder are separate purchases. Plan the order as two lines: the Schlage lock you want on the opening, plus this kit to make it reach through the thick door.
4) Will the Schlage B489 thick door kit work on a door thicker than 2-1/2 inches?
No. The kit tops out at 2-1/2 inches. Anything beyond that falls outside what the B489-106 covers, so measure the door leaf at the bore location before ordering rather than at the edge trim. If you land between 1-7/8 and 2-1/2 inches, this is the kit.
5) I'm standardizing lock hardware across a building with a few oversized doors. Does this let me keep one lock model everywhere?
That's the point of it. Instead of specifying a different lockset for the handful of heavy openings, you spec the same Schlage mechanical lock building-wide and add the B489-106 kit only on the doors measuring 1-7/8 to 2-1/2 inches. Keying, trim, and finish stay consistent, and your parts room carries one lock plus a small stock of kits.
6) Is the B489 kit rated for commercial buildings or just residential doors?
Commercial. Schlage classifies the B489 as a commercial-rated installation accessory, and the typical applications are office buildings, schools, healthcare, retail, industrial and warehouse space, government buildings, and multi-tenant residential that is built to commercial door standards. The Schlage Residential brand line it sits under does not limit it to houses.
How fast can I get the Schlage Residential B489-106 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 Residential B489-106 come with a warranty?
Absolutely. The Schlage Residential B489-106 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 Residential B489-106?
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 Residential B489-106 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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