Dormakaba MOD FHJ Modular Door...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$203.00
$131.34
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Dormakaba MOD FHJ Modular Door Closer Arm, Friction Hold Open, Top Jamb Mount, 4" to 8" Reveal

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Model: MOD FHJ 689

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

$203.00
$131.34
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Dormakaba MOD FHJ Modular Door Closer Arm, Friction Hold Open, Top Jamb Mount, 4" to 8" Reveal

The Dormakaba MOD FHJ is a modular door closer arm engineered for top jamb mounting applications, featuring a friction hold-open function that keeps doors open at any angle without requiring a separate door stop. Designed to accommodate reveal depths from 4" to 8", this replacement arm provides compatibility flexibility for a wide range of commercial door frames. Built for commercial-grade performance, the MOD FHJ integrates seamlessly with compatible Dormakaba modular door closer systems to restore or upgrade door control functionality.

Key Features

  • Friction Hold-Open Functionality: Holds the door open at any desired position without the need for a separate hold-open device, improving traffic flow in high-use commercial environments.
  • Top Jamb Mount Configuration: Engineered specifically for top jamb installation, allowing the closer to be positioned on the door frame head rather than the door face for a clean, unobtrusive appearance.
  • 4" to 8" Reveal Compatibility: Accommodates a broad range of frame reveal depths from 4" to 8", making this arm suitable for diverse commercial door frame conditions.
  • Modular System Design: Functions as part of Dormakaba's modular closer arm system, enabling straightforward replacement or upgrade of the arm component without replacing the entire closer assembly.
  • Commercial-Grade Construction: Designed for demanding commercial applications where consistent, reliable door closer operation is required.
  • Replacement Part Compatibility: Serves as a direct replacement component for compatible Dormakaba modular door closer installations, minimizing downtime and simplifying maintenance.

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: Door Closer Arms
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: MOD FHJ
  • Features: Dorma Door Closer Parts & Accessories

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 MOD FHJ?

Dormakaba door closer arm components are built to commercial-grade standards, delivering dependable performance in high-traffic environments where consistent door control is critical. The MOD FHJ's friction hold-open design and broad 4" to 8" reveal compatibility make it a versatile solution for facilities maintenance professionals seeking a reliable, drop-in replacement for modular closer systems.

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:
Door Closer Arms
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
MOD FHJ
Features:
Dorma Door Closer Parts & Accessories

Dormakaba MOD FHJ 689 – Frequently Asked Questions

1) What reveal depth does the Dormakaba MOD FHJ closer arm work with on a top jamb install?
The MOD FHJ arm covers frame reveals from 4 inches to 8 inches. That range is what decides whether it works on your opening: measure from the face of the door to the face of the frame head where the closer body will sit. Under 4 inches or over 8 inches, this is the wrong arm for the job.
2) Does the MOD FHJ arm hold a door open, and do I still need a floor stop?
It has a friction hold-open, so the door stays put at whatever angle you swing it to and releases when you pull it. No separate hold-open device or stop is needed for the hold function itself. Useful on office corridors, classrooms and stockroom doors that get propped during deliveries or class changes.
3) Is the MOD FHJ a replacement arm only, or a complete door closer?
Arm only. The MOD FHJ is a replacement arm component for Dormakaba modular closer systems, so the closer body, mounting screws and any existing brackets stay in place. If your closer body is leaking oil or won't regulate speed, swapping this arm won't fix it, you need a closer.
4) Should I put a friction hold-open arm on a fire door?
No. A friction hold-open holds the leaf open mechanically at any angle, which defeats the self-closing requirement on a fire-rated opening. Use the MOD FHJ on non-rated doors: offices, retail, warehouse and back-of-house openings. On rated doors you want a standard non-hold-open arm, or an electrified hold-open tied to the fire alarm.
5) Will this arm fit a Dormakaba closer I already have on the door?
The MOD FHJ is built for Dormakaba's modular closer arm system, so it mates with compatible Dormakaba modular closer bodies. It is not a universal arm, and it is specifically a top jamb configuration, so a body set up for regular or parallel arm mounting is a different arm. Check the model on the closer body cover before ordering.
6) What is the difference between a top jamb closer arm and a regular arm mounted on the door?
Top jamb mounting puts the closer body on the face of the frame head above the door, with the arm reaching back to the door. That is what the MOD FHJ is built for. Regular arm mounting puts the closer on the pull side of the door itself. Top jamb is the usual answer on aluminum storefront and on out-swinging exterior doors where there is no room on the door face, and it keeps the hardware off the door leaf.
7) What finishes does the Dormakaba MOD FHJ arm come in?
Three: 689 aluminum, 693 black, and 695 dark bronze. Those are the standard BHMA finish codes, so matching the arm to the rest of the closers and exit hardware in a building is a matter of reading the code already on your existing units. Aluminum 689 is the common match on clear-anodized storefront; 695 pairs with dark bronze frames.
8) Is the MOD FHJ arm suitable for a high-traffic commercial entrance?
It is a commercial-grade component, catalogued for commercial rather than residential use, and the typical applications are office buildings, schools, hospitals, retail, warehouses, multi-tenant residential and municipal buildings. For a property manager standardizing on Dormakaba modular closers across a portfolio, the arm can be swapped per opening without pulling the closer bodies.
How fast can I get the Dormakaba MOD FHJ 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 MOD FHJ 689 come with a warranty?
Absolutely. The Dormakaba MOD FHJ 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 MOD FHJ 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 MOD FHJ 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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