Dormakaba MJ Mortised Jamb Bra...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$42.00
$38.04
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Dormakaba MJ Mortised Jamb Bracket for 8000/7000 Series Door Closers with Non-Hold Open Arms

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Model: MJ 689

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

$42.00
$38.04
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Dormakaba MJ Mortised Jamb Bracket for 8000/7000 Series Door Closers with Non-Hold Open Arms

The Dormakaba MJ Mortised Jamb Bracket is a commercial-grade installation accessory engineered for use with Dormakaba 8000 and 7000 Series door closers. Designed specifically for non-hold open arm configurations, this mortised jamb bracket provides a secure and precise mounting solution for proper door closer operation in commercial applications. As part of the Dormakaba door closer parts and accessories lineup, the MJ bracket ensures compatibility and reliable performance within supported series installations.

Key Features

  • Series Compatibility: Designed for use with Dormakaba 8000 and 7000 Series door closers, ensuring proper fitment and function within these supported product families.
  • Non-Hold Open Arm Configuration: Specifically engineered for non-hold open arm installations, providing the correct geometry and mounting interface for this arm type.
  • Mortised Jamb Mounting: Features a mortised jamb design that integrates cleanly into the door frame, supporting a secure and professional installation.
  • Commercial-Grade Construction: Built to meet the demands of commercial door hardware applications, delivering durability and long-term reliability in high-use environments.
  • OEM Replacement Compatibility: Serves as a direct-fit accessory or replacement bracket within the Dormakaba 8000/7000 Series closer ecosystem, maintaining original performance standards.
  • Installation Accessory Classification: Categorized as an installation accessory and mounting plate, this bracket is the correct component for jamb-side closer mounting in applicable configurations.

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: Mounting Plates
  • Parts and Accessories Type: Installation Accessories
  • Commercial/Residential: Commercial
  • Product Model: MJ

Typical Applications

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

Why Dormakaba MJ?

Dormakaba door closer accessories are engineered to maintain the integrity and performance of their supported closer series. The MJ Mortised Jamb Bracket is purpose-built for the 8000 and 7000 Series, ensuring that non-hold open arm installations meet the exacting standards expected in demanding commercial environments where reliable door control is essential.

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:
Mounting Plates
Parts and Accessories Type:
Installation Accessories
Commercial/Residential:
Commercial
Product Model:
MJ
Features:
Dorma Door Closer Parts & Accessories

Dormakaba MJ 689 – Frequently Asked Questions

1) What does the Dormakaba MJ jamb bracket do, and which closers does it work with?
The MJ is a mortised jamb bracket that mounts into the door frame to carry the arm end of a Dormakaba door closer. It is built for Dormakaba 8000 and 7000 Series closers set up with non-hold open arms, and it gives the arm the correct geometry and mounting interface at the jamb side.
2) Can I use the MJ bracket with a hold-open arm closer?
No. The MJ bracket is engineered specifically for non-hold open arm installations on Dormakaba 8000 and 7000 Series closers. If the opening uses a hold open arm, this is the wrong bracket and you need the hold-open version for that arm type.
3) Will the MJ bracket fit a Dormakaba closer outside the 8000 or 7000 Series?
Fitment is stated only for the Dormakaba 8000 and 7000 Series closers. Match the closer series stamped on the body before ordering; the bracket geometry is tied to those two families and nothing else is covered.
4) Does the mortised jamb bracket require frame prep?
Yes, it mortises into the jamb rather than surface mounting, so the frame needs a pocket cut for it. On a new frame that prep is done at the shop; on a retrofit you are cutting into the existing jamb, which is why this bracket suits new work or a like-for-like replacement of an existing mortised setup.
5) Is the MJ bracket an OEM part or an aftermarket copy?
It is the Dormakaba MJ bracket itself, a direct-fit accessory or replacement within the 8000/7000 Series closer family, so a closer that already used a mortised jamb bracket takes it without changing the arm or the closer body.
6) What finish does the Dormakaba MJ jamb bracket come in?
One finish: 689 aluminum. That is the standard painted aluminum closer finish, so it blends with 689-finish 8000 and 7000 Series closer bodies and arms rather than standing out on the frame.
7) Is this bracket rated for high-traffic commercial doors or is it a light-duty part?
Commercial duty. The MJ is classified as a commercial installation accessory and is used on office buildings, schools, healthcare, retail, warehouses, multi-tenant residential and municipal buildings, which is the traffic level Dormakaba 8000/7000 closers are specified for.
How fast can I get the Dormakaba MJ 689 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 Dormakaba MJ 689 come with a warranty?
Absolutely. The Dormakaba MJ 689 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 Dormakaba MJ 689?
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 Dormakaba MJ 689 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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