Name: LCN 4050A-3077L Long Regular Arm Assembly with Rod and Shoe
Brand: LCN
SKU: 4050A-3077L 689
Price: 148.26 USD
Availability: InStock

Product Overview
FAQs

LCN 4050A Series Long Regular Arm Assembly with Rod and Shoe

Professional Door Closer Replacement Component

The LCN 4050A Series Long Regular Arm Assembly provides reliable replacement functionality for commercial door closer systems. This non-handed assembly includes the long rod and shoe components, with the 4050A-79LR configuration designed for top jamb mount applications. Engineered for ADA compliant installations, this replacement arm maintains the professional performance standards required in commercial door control applications.

Professional Features & Benefits

Complete Assembly: Includes long rod and shoe components for comprehensive replacement functionality.
Non-Handed Design: Universal configuration eliminates handing concerns for simplified inventory and installation.
Top Jamb Mount Compatibility: 4050A-79LR configuration specifically designed for top jamb mounting applications.
ADA Compliant: Meets accessibility requirements for commercial door control applications.
4050A Series Integration: Engineered for seamless compatibility with existing 4050A Series door closer systems.
Commercial-Grade Construction: Built to withstand demanding commercial use with reliable long-term performance.

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-3077L
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 precision engineering designed for demanding commercial applications. ADA compliant construction ensures accessibility compliance while maintaining the dependable performance standards required in high-traffic environments. Engineered for seamless integration with existing 4050A Series systems where consistent door control performance is 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-3077L
Product Category:: Door Controls
Department:: Door Hardware

LCN 4050A-3077L 689 – Frequently Asked Questions

1) Will the LCN 4050A-3077L regular arm work on a top jamb mounted closer?

Yes. The 4050A-3077L is the long regular arm assembly with rod and shoe, and the 4050A-79LR configuration is intended for top jamb mount applications. The long rod and shoe are what let the arm reach back to the door face from a closer body mounted on the frame face above the opening.

2) Do I need to order a left hand or right hand version of the LCN 4050A long regular arm?

No handing to specify. The 4050A-3077L arm assembly is non-handed, so one part covers both swings. You pick finish only. That also means a maintenance shop can stock a single arm for every 4050A opening in the building instead of two.

3) What comes in the LCN 4050A-3077L arm assembly, or do I have to buy the rod and shoe separately?

Rod and shoe are included. The 4050A-3077L ships as a complete long regular arm assembly, so you get the main arm, the long forearm rod, and the shoe that fastens to the door. What it does not include is the closer body itself, this is a replacement arm for an existing 4050A Series closer.

4) Which door closers does the LCN 4050A-3077L arm fit?

It is built for LCN 4050A Series closers. The arm mates to the 4050A closer spindle, so it is a direct replacement on an existing 4050A body with a bent or damaged arm. It is not sold as a fit for other LCN series or for another manufacturer's closer.

5) Is a regular arm or a parallel arm the right choice for my door closer?

Regular arm, like the 4050A-3077L, mounts the closer on the pull side of the door (or top jamb on the frame) with the arm projecting out from the opening. It gives the most efficient opening force, which is why it is the usual pick where ADA opening force matters. A parallel arm mounts on the push side and folds back flat against the door face, so the arm is out of the way and less exposed to abuse, and it is what you use when you also want a stop or hold-open built into the arm, like the Sargent 25-CPS parallel arm with compression stop. Choose regular arm for lowest opening force and a clean pull-side install, parallel arm for a protected push-side install or built-in stop.

6) I have a hold-open door closer arm that failed. Is the LCN 4050A-3077L a hold-open replacement?

No. The 4050A-3077L is a plain regular arm, it has no hold-open function. If the arm you are replacing held the door open at a set degree, this is not the equivalent part. For a hold-open arm on other closer families ZenSupply carries the Sargent 25-H hold-open arm for 351 and 281 closers, the Sargent 25-CPSH hold-open parallel arm with compression stop, and the Falcon SC60A-3049DS hold-open dead stop parallel arm.

7) The door needs a stop built into the arm so it cannot swing into the wall. What arm does that?

A long regular arm with rod and shoe like the LCN 4050A-3077L is a top jamb mount regular arm and carries no integral stop, so overswing has to be controlled by a separate wall or floor stop. Arms that build the stop into the arm itself are the parallel arm stop types: the Sargent 25-CPS is a heavy duty parallel arm with compression stop for 351 and 281 closers, the Sargent 25-CPSH adds hold-open to that same compression stop arm, and the Falcon SC60A-3049DS is a dead stop parallel arm assembly for SC60A Series closers. Those are the arms to specify when the opening has no room for a wall stop - each mounts to its own manufacturer's closer body.

8) My closer is a Sargent 351. Will the LCN 4050A-3077L arm fit it?

No. The 4050A-3077L is engineered for LCN 4050A Series closer bodies and its rod and shoe geometry matches that spindle and mounting. A Sargent 351 or 281 body takes a Sargent arm - the 25-H is a hold-open arm for 351 and 281 in standard and top jamb mount, and the 25-CPS is a heavy duty parallel arm with compression stop for those same bodies. Read the model number stamped on the closer body or its cover, then order the arm from that manufacturer's series.

9) What is the Falcon equivalent of the LCN 4050A-3077L long regular arm assembly?

There is no exact Falcon copy of the LCN 4050A-3077L, because closer arms are series-specific and mount to the closer body they were built for. The closest Falcon parts are arm assemblies for their own closer families: the Falcon SC60A-3049DS is a hold-open dead stop parallel arm assembly for the SC60A Series, and the Falcon SC70A-3049/PA is a hold open arm with PA bracket for the SC70A Series. If the closer body on the door is an LCN 4050A, the 4050A-3077L is the arm that belongs on it; the Falcon arms belong on Falcon SC60A and SC70A bodies. Identify the closer body first, then buy the arm to match it.

10) I need the door to hold open. Is there an arm that does that instead of a plain regular arm?

The LCN 4050A-3077L is a long regular arm assembly with rod and shoe - a regular arm controls the door and returns it closed, it does not latch the door open. For hold-open, the arm has to be a hold-open type on a closer that accepts it. The Sargent 25-H is a hold-open door closer arm for Sargent 351 and 281 closers in standard and top jamb mount, and the Sargent 25-CPSH is a heavy-duty hold-open parallel arm with compression stop for the same 351 and 281 bodies. On the Falcon side, the 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. Each of those requires its matching closer body - a hold-open arm from another manufacturer will not go onto an LCN 4050A.

11) Do I need to buy a whole new closer, or can I just replace the arm?

If the closer body on the door is an LCN 4050A and only the arm is bent or worn, the 4050A-3077L long regular arm assembly with rod and shoe is a replacement part that puts the existing closer back in service, and it comes in aluminum, statuary bronze, light bronze, gloss black, dark bronze, and brass finishes. If the body itself is leaking or has lost control, replace the whole unit: the Sargent 1431-CPS TB EN is a Grade 1 heavy duty surface door closer with parallel arm and compression stop, and the Sargent 25-CPS is a Grade 1 heavy duty parallel arm closer. Arm-only is the answer when the body is sound; a complete closer is the answer when it is not.

12) The opening is a center hung door on a floor pivot. Is a long regular arm the right part?

No. The LCN 4050A-3077L long regular arm with rod and shoe is built for top jamb mount on a swing door with a surface closer. A center hung door running on a floor pivot uses different geometry entirely - the Falcon OHC100A-DP is a center hung floor pivot with end load arm for OHC100 Series door closers, which is the part family for that condition. Confirm whether the door is butt hung with a surface closer or center hung on pivots before ordering an arm; the two are not interchangeable.

13) Does the LCN 4050A regular arm keep the opening force within ADA limits?

The 4050A-3077L is an ADA compliant assembly, and the regular arm mounting it is built for is the most mechanically efficient of the closer arm types, so it is the configuration you want on an accessible opening. Opening force is still set by the closer body spring size and adjustment, not the arm, so the closer itself has to be sized for the opening.

14) What finishes does the LCN 4050A-3077L arm come in, and can I match the closer already on the door?

Six finishes: 689 aluminum, 690 statuary bronze, 691 light bronze, 693 gloss black, 695 dark bronze, and 696 brass. Those are the standard BHMA finish numbers stamped on LCN closer covers, so match the number on the existing closer cover and the replacement arm will read as part of the same assembly rather than an obvious repair.

15) My closer is an automatic operator, not a manual closer. Will this LCN arm work?

No. The 4050A-3077L is an arm for a manual surface door closer. An automatic operator uses its own arm and, on many installs, a track. Falcon's 8230-3077PLCM standard arm with track is the equivalent part for 8230 Series automatic door operators.

16) What is the difference between a long regular arm and a standard regular arm on an LCN closer?

Length of the forearm rod. The 4050A-3077L is the long version, which gives the extra reach needed when the closer sits farther from the door face than a normal pull-side install, the top jamb mount case being the common one. If your closer is body-mounted on the door itself with a short throw to the frame, the long rod will over-reach and the standard regular arm is the correct part.

17) Is a standard arm with track the same thing as a long regular arm with rod and shoe?

No - they look similar in a parts list and behave differently on the door. The LCN 4050A-3077L is a long regular arm assembly with rod and shoe, a two-piece arm where the rod terminates in a shoe fastened to the door or frame. A track arm rides a slide channel instead: the Falcon 8230-3077PLCM is a standard arm with track for 8230 Series automatic door operators. A track arm needs the track and the operator or closer built to use it, so it is not a drop-in for an opening prepped for a rod and shoe. Match the arm type to what is already prepped on the frame.

18) I am standardizing closers across a building. Should I stay with LCN 4050A arms or move to one manufacturer's closer line?

Two different jobs. Keeping LCN 4050A arms like the 4050A-3077L on hand covers doors that already carry 4050A bodies - it is non-handed, so one part number serves both hands, and it is offered in aluminum, statuary bronze, light bronze, gloss black, dark bronze, and brass to match existing hardware. If the plan is to convert openings to a single new closer line, the Sargent 1431-CPS TB EN is a Grade 1 heavy duty surface closer with parallel arm and compression stop, and the Sargent 25-CPS is a Grade 1 heavy duty parallel arm closer for 351 and 281 applications. Most facilities do both: replace complete closers as bodies fail, and stock the matching arm for the bodies still in service.

19) Is the LCN 4050A long arm rated for a high traffic commercial entrance?

The 4050A-3077L is a commercial-grade component, catalogued for commercial rather than residential service, and it is the arm used on 4050A closers in office buildings, schools, hospitals, retail, warehouses, multi-tenant residential, and government facilities. For a corridor or entry that sees constant use, the failure point is usually the arm getting struck or the shoe fasteners working loose in the door, so replace the arm and re-anchor the shoe at the same time.

How fast can I get the LCN 4050A-3077L 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-3077L 689 come with a warranty?

Absolutely. The LCN 4050A-3077L 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-3077L 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-3077L 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.

LCN 4050A-3077L Long Regular Arm Assembly with Rod and Shoe

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