LCN 4050A-3077EDA Extra Duty R...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$229.00
$185.11
LCN 4050A-3077EDA Extra Duty Replacement Arm with Forged Steel Construction

LCN 4050A-3077EDA Extra Duty Replacement Arm with Forged Steel Construction

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Model: 4050A-3077EDA 689
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$229.00
$185.11
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LCN 4050A Series Extra Duty Replacement Arm with Forged Steel Construction

Heavy-Duty Replacement Component for Door Closer Systems

The LCN 4050A Series Extra Duty Replacement Arm delivers professional-grade durability for demanding commercial applications. This non-handed replacement component features forged, solid steel main and forearm construction specifically engineered for potentially abusive installations where standard components may fail. The heavy-duty design ensures reliable performance in high-traffic environments while maintaining ADA compliance for accessibility requirements.

Professional Features & Benefits

  • Heavy-Duty Construction: Forged, solid steel main and forearm provide exceptional durability for potentially abusive installations and high-traffic commercial applications.
  • Non-Handed Design: Universal configuration eliminates handing concerns and simplifies inventory management for maintenance teams.
  • 4050A Series Compatibility: Engineered specifically for LCN 4050A Series door closers ensuring proper fit and optimal performance.
  • ADA Compliance: Meets accessibility requirements for commercial installations where code compliance is mandatory.
  • Commercial-Grade Performance: Designed for demanding commercial environments including schools, hospitals, offices, and retail facilities.
  • Replacement Part Availability: Extends the service life of existing door closer systems through professional replacement components.

Technical Specifications

  • ADA Compliant: Yes
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Parts and Accessories Type: Replacement Parts
  • Product Attribute: Parts and Accessories
  • Product Category: Door Controls
  • Product Group: Door Controls
  • Product Model: 4050A-3077EDA
  • Product Subgroup: Parts and Accessories
  • Product Type: Arm
  • Series: 4050A Series
  • Subcategory: Parts and Accessories

Professional Applications

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

Why Choose LCN Quality?

LCN door closer replacement components deliver professional-grade reliability with forged, solid steel construction engineered for potentially abusive installations. The ADA-compliant design ensures code compliance while providing the durability needed for demanding commercial applications. Engineered for demanding commercial applications where dependable performance and extended service life are essential.

Manufacturer Resources

LCN Full Line Catalog

Product Specs

Series:
4050A Series
Subcategory:
Parts and Accessories
Product Group:
Door Controls
Product Subgroup:
Parts and Accessories
Product Type:
Door Closer Arms
Commercial/Residential:
Commercial
ADA Compliant:
Yes
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Model:
4050A-3077EDA
Product Category:
Door Controls
Department:
Door Hardware

LCN 4050A-3077EDA 689 – Frequently Asked Questions

1) Will the LCN 4050A-3077EDA arm work on any LCN 4050A closer, or do I need to know the door handing first?
Handing is not a concern with this one. The 3077EDA extra duty arm is non-handed, so the same part serves left and right hand openings, which is why maintenance shops stock a single arm for a whole building's worth of 4050A closers. It is built specifically for the LCN 4050A Series closer body.
2) My door closer arm keeps getting bent or broken off in a high abuse doorway. Is the extra duty arm actually different?
Yes, and that is the whole point of the EDA. Both the main arm and the forearm are forged solid steel rather than cast, which is what LCN specifies for potentially abusive installations. If you are replacing the same standard arm repeatedly on a school corridor, gym, or dock door, the forged extra duty arm is the upgrade path without changing the closer body.
3) Is the 4050A-3077EDA a complete door closer or just the arm?
Arm only. The 3077EDA is a replacement arm assembly for an LCN 4050A Series closer, not a closer body. If your closer itself is leaking or has lost control, you need a complete unit instead. Heavy duty Grade 1 complete closers with arm included are a separate purchase, for example the Sargent 1431-CPS TB EN surface closer with parallel arm and compression stop.
4) Can I use this LCN arm on a Sargent or Falcon closer?
No. The 3077EDA is engineered for the LCN 4050A Series closer and will not mount to another manufacturer's body. For Sargent 351 or 281 closers, the arms that fit are Sargent's own, such as the 25-CPS parallel arm with compression stop or the 25-H hold open arm for regular and top jamb mount. Falcon closers likewise take Falcon arms, for example the SC70A-3049/PA hold open arm for the SC70A Series.
5) What is the closest equivalent to the LCN 4050A-3077EDA extra duty arm if the closer on the door is a Sargent 351 or 281?
Use a Sargent 25 series arm instead. The LCN 4050A-3077EDA is built specifically for LCN 4050A Series door closers, so it will not serve a Sargent closer body. The Sargent 25-CPS is a heavy duty parallel arm with compression stop for 351/281 closers, and the 25-CPSH is the hold-open version of that same parallel arm with compression stop. Match the arm to the closer brand and series that is already on the door.
6) I need the arm to hold the door open. Does the LCN 4050A-3077EDA do that, or do I need a different arm?
The 4050A-3077EDA is an extra duty replacement arm with forged solid steel main arm and forearm for potentially abusive installations; hold-open is not part of its description. If hold-open is the requirement, the arm has to be a hold-open type for your closer: Sargent offers the 25-H hold-open arm for 351 and 281 closers in standard and top jamb mount, and the 25-CPSH hold-open parallel arm with compression stop. Falcon's SC70A-3049/PA is a hold open arm with PA bracket for SC70A Series closers, and the SC60A-3049DS is a hold-open dead stop parallel arm assembly.
7) Does replacing my 4050A closer arm with the extra duty version affect ADA door compliance?
No. The 3077EDA arm is ADA compliant, so swapping it in on an accessible opening keeps the closer within accessibility requirements. It is a commercial-rated component, intended for code-governed openings in schools, healthcare, offices, and government buildings rather than residential use.
8) What finishes does the LCN 4050A extra duty arm come in so it matches my existing closer covers?
Six finishes: 689 aluminum, 690 statuary bronze, 691 light bronze, 693 gloss black, 695 dark bronze, and 696 brass. Match the number stamped or specified on the closer already installed, since a replacement arm sitting next to an aged cover in a different finish is the usual complaint after a repair.
9) I need the closer to hold the door open or act as a stop. Does this extra duty arm do that?
The 3077EDA is the extra duty arm, built for strength rather than for hold open or stop duty. If the opening needs a mechanical hold open or a dead stop function, that is a different arm choice: on Sargent 351 and 281 closers the 25-CPSH gives hold open plus compression stop, and Falcon's SC60A-3049DS is a hold open dead stop parallel arm assembly for SC60A closers.
10) Will the LCN 4050A-3077EDA arm work on a track-style operator?
No. The 4050A-3077EDA is a swing-arm replacement for LCN 4050A Series surface closers. A track application needs an arm supplied with its track, such as the Falcon 8230-3077PLCM standard arm with track for 8230 Series automatic door operators. The two are different geometries at the door and at the frame, so they are not interchangeable.
11) If the door abuse is severe enough that we keep replacing arms, is there an alternative to just fitting another LCN 4050A-3077EDA?
One route is the same forged solid steel extra duty arm again, which is non-handed and ADA compliant, so it fits either hand without stocking two part numbers. The other route is a stop-in-the-arm assembly that takes the impact at the arm instead of the door check: the Sargent 25-CPS and 1431-CPS TB EN are heavy duty Grade 1 parallel arm products with compression stop, and the Falcon SC60A-3049DS is a dead stop parallel arm assembly. Those stop-equipped options require their matching closer series rather than a 4050A.
12) Our closer is a center hung floor closer. Is the 4050A extra duty arm the right replacement part?
No. The 4050A-3077EDA is a replacement arm for LCN 4050A Series surface-mounted closers. A center hung floor application uses a pivot and end load arm assembly instead, such as the Falcon OHC100A-DP center hung floor pivot with end load arm for OHC100 Series door closers. Confirm which closer type is on the opening before ordering an arm.
13) Is it worth repairing an LCN 4050A closer with a new arm instead of replacing the whole unit?
If the closer body still controls the door properly and only the arm is bent, sheared, or loose, fitting the 3077EDA forged steel arm puts the opening back in service and extends the life of the existing closer. Going to the extra duty arm on a door that has already destroyed one arm also reduces the odds of a repeat call. Replace the complete closer only when the body itself has failed.
14) We are standardizing arms across a school. Does buying the LCN 4050A extra duty arm mean stocking left and right hand versions?
No. The 4050A-3077EDA is non-handed, so one part number covers both hands, and it is offered in 689 aluminum, 690 statuary bronze, 691 light bronze, 693 gloss black, 695 dark bronze and 696 brass for finish matching across a building. Sargent's 25-H arm, by contrast, is described for standard and top jamb mount on 351 and 281 closers, so the mount type drives that selection. Standardize on the closer family first, then the arm.
How fast can I get the LCN 4050A-3077EDA 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 LCN 4050A-3077EDA 689 come with a warranty?
Absolutely. The LCN 4050A-3077EDA 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 LCN 4050A-3077EDA 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 LCN 4050A-3077EDA 689 from ZenSupply?
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