Calibre Door Closers CA3010-JO JO Offset Top Arm Assembly, Mortise Stylet
- “JO” Type Offset Top Arm Assembly CA3010-JO (Mortised Type, Cut down into 9/16" Depth Top Rail)
| Category | Concealed Closer Misc. Parts, Concealed Overhead Closers, Door Closers |
| Finish Color | Aluminum |
| Mounting | Offset Top Arm |
| Supplier | Calibre Door Closers |
Manufacturer Resources
Product Specs
- Subcategory:
- Concealed Closers
- Series:
- CA1100/CA2200/CA3300/CA6900 Series
- Product Group:
- Door Controls
- Product Subgroup:
- Parts and Accessories
- Product Type:
- Top Arm Assembly
- Commercial/Residential:
- Commercial
- Parts and Accessories Type:
- Replacement Parts
- Product Attribute:
- Parts and Accessories
- Product Model:
- CA3010-JO
- Door Hand Direction:
- Non-Handed
- Product Category:
- Door Controls
- Department:
- Door Hardware
Calibre Door Closers CA3010-JO-AL – Frequently Asked Questions
1) What is the Calibre CA3010-JO top arm assembly and what does it do?
The CA3010-JO is the "JO" type offset top arm assembly for Calibre concealed overhead door closers. It is the arm that links the closer body to the door, not the closer itself, so it is what you order when the arm is bent, worn, or missing and the closer body is still good. It is a mortise style arm: the top rail has to be cut down to a 9/16 inch depth to receive it.
2) Which Calibre door closers does the CA3010-JO arm fit?
The CA3010-JO offset top arm belongs to the Calibre CA1100, CA2200, CA3300 and CA6900 concealed closer series. If the closer body in your header is one of those four families, this is the arm that goes with it. It is not an arm for a surface mounted closer.
3) Do I need to order a left hand or right hand version of the CA3010-JO arm?
No handing to specify. The CA3010-JO arm is non-handed, so the same part works on a left hand or right hand door. Pick the finish and you are done.
4) My concealed closer is leaking or not closing properly. Will replacing the top arm fix it?
Only if the fault is in the arm. The CA3010-JO is the top arm assembly alone, the linkage between the closer body and the door. A bent, loose, or worn arm gives you a door that drags, binds, or will not pull to the latch. Hydraulic problems, oil weep, or dead closing speed are in the closer body, and swapping the arm will not change them. In that case you are replacing the CA1100, CA2200, CA3300 or CA6900 closer, not this part.
5) What is the difference between the JO offset top arm and a standard top arm on a Calibre concealed closer?
The JO arm is an offset arm and it mortises in, cut down into a 9/16 inch depth top rail. A surface style top arm sits on the face of the rail instead and needs no rail machining. Choose the JO when the existing door is already prepped for a cut in offset arm or when you want the arm to sit flush into the rail; choose a surface style arm when you cannot machine the door.
6) What finishes does the Calibre CA3010-JO offset top arm come in?
Two finishes: AL aluminum and DU storefront bronze. On an aluminum storefront the arm shows at the top of the door, so match it to the door and frame finish rather than to the closer body buried in the header.
7) Is the Calibre CA3010-JO arm suitable for a commercial entrance or is it a residential part?
Commercial. The CA3010-JO is a commercial rated replacement part for concealed overhead closers, the kind used on aluminum storefront and institutional entrances, not a residential closer accessory.
How fast can I get the Calibre Door Closers CA3010-JO-AL 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 Calibre Door Closers CA3010-JO-AL come with a warranty?
Absolutely. The Calibre Door Closers CA3010-JO-AL 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 Calibre Door Closers CA3010-JO-AL?
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 Calibre Door Closers CA3010-JO-AL from ZenSupply?
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