Dormakaba MOD ISJ 689 – Frequently Asked Questions
1) Is the Dorma MOD ISJ a top jamb arm or a regular pull-side arm?
The MOD ISJ is a top jamb closer arm, so the closer body mounts on the face of the frame above the door and the arm swings to the push side of the door. It is not a pull-side (regular arm) assembly, and it is not an interchangeable substitute for one. If your closer body is mounted on the door itself, you need the arm for that mounting style instead.
2) What does the cushion arm on the Dorma MOD ISJ do that a standard arm doesn't?
A cushion (stop) arm has a built in dead stop in the elbow, so the arm itself limits how far the door opens and absorbs the shock at the end of the swing. That protects the closer and the frame on openings with wind load or no wall stop. A standard top jamb arm has no stop function, so the door needs a separate floor or wall stop.
3) Can I buy just the arm to repair a Dorma closer, or do I have to replace the whole closer?
The MOD ISJ is sold as a standalone replacement arm assembly, so a bent or broken top jamb cushion arm can be swapped without pulling the closer body off the frame. Order it in the finish that matches your existing closer, and confirm the arm you are removing is the cushion top jamb type before ordering.
4) What finishes does the Dorma MOD ISJ closer arm come in?
Four finishes: 689 anodized aluminum, 693 black, 695 dark duranodic bronze and 696 satin brass. The 689 aluminum is the one that matches most painted aluminum storefront closers; pick the code that matches the closer body already on the opening rather than the door hardware, since arm and body sit together.
5) Is the MOD ISJ arm rated for commercial door traffic or is it a residential part?
It is a commercial grade replacement part, catalogued as heavy duty, and is the kind of arm used on storefront and institutional entrances rather than residential doors.
How fast can I get the Dormakaba MOD ISJ 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 ISJ 689 come with a warranty?
Absolutely. The Dormakaba MOD ISJ 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 ISJ 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 ISJ 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.