ABH 3780 Universal Door Coordi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$277.00
$59.54
ABH 3780 Universal Door Coordinator, 20 in., Prime Coat finish, shown with active and inactive arms extended

ABH 3780 Universal Door Coordinator 20 Inch with USP Primer Coat for Fire Doors

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Model: 3780 USP
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$277.00
$59.54
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ABH 3780 Universal Door Coordinator, 20 Inch, USP Primer Coat

The ABH 3780 is a stop-mounted door coordinator for pairs of doors up to 8 feet wide in commercial fire-rated applications. The long arm holds the active door open until the short arm is depressed by the inactive door, ensuring the inactive leaf closes first and the astragal seals properly. No mounting brackets are required. Comes standard in USP primer coat (black matte); custom factory finishes are available.

Certifications and Compliance

  • UL Listed for use with swinging fire doors incorporating an astragal, up to 3-hour fire rating
  • Meets ANSI 156.3 Type 21 requirements when used with carry bar

Key Features

  • Stop-mounted installation, no separate mounting bracket needed
  • Accommodates door pairs up to 8 feet wide
  • Sequential closing: active door held open until inactive door depresses short arm
  • USP primer coat finish standard; factory custom finishes available
  • Part of the ABH 3700 Series

Typical Applications

  • Commercial office buildings
  • Educational facilities
  • Healthcare institutions
  • Government and municipal buildings
  • Multi-family residential common areas
  • Industrial and warehouse facilities

Product Specs

Product Group:
Door Controls
Product Subgroup:
Door Coordinators
Product Type:
Door Coordinators
Subcategory:
Bolts and Latches
Commercial/Residential:
Commercial
Series:
3700 Series
Product Category:
Door Controls
Department:
Door Hardware

ABH 3780 USP – Frequently Asked Questions

1) Do I need mounting brackets to install the ABH 3780 door coordinator?
No brackets. The 3780 is a stop-mounted coordinator, which is the point of the design: it fastens directly to the frame stop rather than requiring a separate bracket set the way bar coordinators typically do. ABH publishes a drilling template for the 3780 so the fastener locations can be laid out on the stop before you mount it.
2) Do I need a carry bar with the ABH 3780 coordinator?
For ANSI 156.3 Type 21 compliance, yes. The 3780 meets or exceeds Type 21 requirements when used with a carry bar, so if your spec or inspector calls out Type 21, order the carry bar alongside the coordinator. The coordinator alone still performs the sequencing function; the carry bar is what brings the assembly to the Type 21 standard.
3) Do I need a door coordinator on my pair of fire doors, or can I skip it?
You need one when the pair has an astragal or overlapping edges and both leaves have closers, because the leaves cannot close in any order and still latch. The ABH 3780 is UL Listed specifically for swinging fire doors incorporating an astragal, up to 3 hours. On a pair with a mullion, or leaves that close independently without overlap, a coordinator is not doing anything for you.
4) What is the closest equivalent to the ABH 3780 door coordinator from another brand?
The Trimco 3094 is the nearest match in operating principle: it is a UL stop mounted coordinator, the same mounting approach the ABH 3780 uses, where the unit sits on the door stop and the long arm holds the active door open until the short arm is depressed by the inactive door. Both are intended for fire-rated pairs. If a specifier has written a stop mounted coordinator into the drawing and the ABH 3780 does not fit the schedule, the Trimco 3094 answers the same detail.
5) What should I use if a stop mounted coordinator will not work on my opening?
Where the door stop cannot carry a coordinator, a retracting arm type is the alternative: the Trimco 3092 is a UL retracting arm coordinator. A bar type such as the Ives COR32/42/52/60/72 aluminum bar coordinator is the other route, running across the opening rather than sitting at the stop. Both are fire door options, as is the ABH 3780, which is UL Listed for swinging fire doors with an astragal for up to 3 hours and meets ANSI 156.3 Type 21 when used with a carry bar.
6) How does a door coordinator know which leaf closes first?
Mechanically, by arm length. On the ABH 3780, the long arm holds the active leaf open until the short arm is depressed by the inactive leaf closing. Once the inactive door has passed, the long arm releases and the active door closes on top of it. That is the whole reason a coordinator exists on a pair with an astragal or overlapping edge: without it, the active leaf can close first and leave the pair unlatched.
7) What is the difference between a stop-mounted coordinator and a bar type coordinator?
A stop-mounted coordinator like the ABH 3780 fastens to the frame stop and uses arms to hold the active leaf back; a bar type runs a bar across the opening face and usually needs mounting brackets. ZenSupply carries both: the Ives COR Series aluminum bar coordinators are the bar style and are fire rated, and the Trimco 3094 is another stop mounted coordinator. Trimco also makes the 3092 retracting arm coordinator, a third arrangement. Stop mounting keeps the hardware count down; bar types are the more familiar look on wide openings.
8) Is there another stop mounted door coordinator I can use if the ABH 3780 does not fit my opening?
The Trimco 3094 is a UL stop mounted coordinator and the closest direct alternative in the same mounting style. If you would rather go to a bar coordinator, the Ives COR Series aluminum bar coordinators are UL fire rated as well. For a gravity type instead of a spring arm, Ives makes the COR7G and COR9G brass gravity coordinator with field adjustable operation.
9) Is a gravity coordinator a substitute for the ABH 3780 universal coordinator?
It sequences the same pair but works differently. The Ives COR7G and COR9G are brass gravity door coordinators with field-adjustable operation and are fire rated. The ABH 3780 is a mechanical stop-mounted unit rated for doors up to 8 feet wide, UL Listed for swinging fire doors incorporating an astragal for up to 3 hours. A gravity unit relies on its own operating principle and offers field adjustment; if the job calls specifically for the stop-mounted arm sequencing described for the 3780, the gravity coordinator is a different device rather than a drop-in for it.
10) For a fire-rated pair in a hospital or school, which door coordinators can I standardize on?
All of the common types carry fire door credentials, so the choice comes down to mounting. The ABH 3780 is UL Listed for swinging fire doors incorporating an astragal for up to 3 hours and meets ANSI 156.3 Type 21 with a carry bar, mounted at the stop. The Trimco 3094 is a UL stop mounted coordinator and the Trimco 3092 a UL retracting arm coordinator. On the Ives side, the COR32/42/52/60/72 aluminum bar series and the COR7G/COR9G brass gravity coordinators are both fire rated. A facility standardizing across many pairs usually picks one mounting style and repeats it so the door prep and the maintenance stock stay uniform.
11) What finish does the ABH 3780 coordinator ship in, and can I get it painted to match?
It ships in USP prime coat, a black matte primer, and that is the only stock configuration. Custom finishes are available from the factory. Since it mounts on the stop above the doors, most jobs either leave the primer or field paint it to match the frame.
12) Is the ABH 3780 coordinator suitable for apartment corridor and stairwell doors?
Yes, it is a commercial rated device and corridor and stairwell pairs are exactly where it goes. It is used across office buildings, schools, healthcare, retail, warehouses, multi-tenant residential, and government facilities. On a fire rated stair pair with an astragal, its UL Listing runs to 3 hours.
How fast can I get the ABH 3780 USP 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 ABH 3780 USP come with a warranty?
Absolutely. The ABH 3780 USP 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 ABH 3780 USP?
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 ABH 3780 USP from ZenSupply?
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