Name: LCN 4020-3077L Long Arm Assembly with Deep Reveal Adapter
Brand: LCN
SKU: 4020-3077L 689
Price: 131.64 USD
Availability: InStock

Product Overview
FAQs

LCN 4020 Series Long Arm Assembly with Deep Reveal Adapter

Professional Door Closer Replacement Component

The LCN 4020 Series Long Arm Assembly provides extended reach capability for 4020 Series door closers in applications requiring specialized mounting configurations. This non-handed replacement arm includes the 4020-79LR deep reveal adapter for installations with extended frame depths. Designed specifically for commercial door control applications where standard arm configurations cannot accommodate unique architectural requirements.

Professional Features & Benefits

Series Compatibility: Engineered specifically for 4020 Series door closers ensuring perfect fit and reliable operation.
Non-Handed Design: Universal configuration works on both left-hand and right-hand door applications for installation flexibility.
Deep Reveal Adapter Included: Complete assembly includes 4020-79LR adapter component for extended frame depth installations.
Extended Reach Configuration: Long arm design accommodates specialized mounting requirements where standard arms cannot be used.
Commercial-Grade Construction: Built to LCN quality standards for demanding commercial door control applications.
ADA Compliant Operation: Maintains ADA compliance when properly installed with compatible 4020 Series door closers.
Professional Replacement Part: Genuine LCN component ensures compatibility and maintains original closer performance specifications.

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: 4020-3077L
Product Subgroup: Parts and Accessories
Product Type: Long Arm
Series: 4020 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 components deliver professional-grade reliability with precision engineering designed for demanding commercial applications. This genuine replacement arm maintains the original performance specifications of your 4020 Series door closer while accommodating specialized installation requirements. Engineered for demanding commercial applications where dependable door control performance is essential.

Manufacturer Resources

LCN Full Line Catalog

Product Specs

Series:: 4020 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:: 4020-3077L
Product Category:: Door Controls
Department:: Door Hardware

LCN 4020-3077L 689 – Frequently Asked Questions

1) Will the LCN 4020-3077L long arm work on a left-hand door, or do I need to order handed?

The 4020-3077L is non-handed, so one part covers both left-hand and right-hand openings. No need to specify handing on the order, and a property manager stocking spares only has to carry one arm for the whole building.

2) Does the LCN 4020-3077L arm fit any LCN closer, or only the 4020 Series?

It is built for LCN 4020 Series closers only. Door closer arms are matched to the closer body's spindle and pinion, so a 4020 arm is not a drop-in for another LCN series. Check the series number stamped on the closer body before ordering.

3) My door frame has a deep reveal and the standard closer arm won't reach. What do I need?

That is what this assembly is for. The 4020-3077L long arm ships with the 4020-79LR deep reveal adapter, which is the piece that lets a parallel-arm mount work where the frame face sits back further than a standard arm can span. You get the extended-reach arm and the adapter in one part number rather than sourcing the adapter separately.

4) Is the LCN 4020-3077L a complete door closer or just the arm?

Arm only. This is a replacement arm assembly plus the deep reveal adapter, not a closer body. If the closer itself is leaking or has lost its spring tension, you need a complete closer, not this part. Sargent's 1431-CPS TB EN is a Grade 1 heavy duty surface closer supplied with a parallel arm and compression stop if you are replacing the whole unit.

5) I need the door to hold open. Does the LCN 4020-3077L long arm do that, or do I need a different arm?

The LCN 4020-3077L is a long arm assembly with a deep reveal adapter for 4020 Series closers; its purpose is extended reach where a standard arm cannot span the frame reveal, not hold-open. Arms that carry a hold-open function include the Sargent 25-H, a hold-open arm for 351 and 281 closers in standard and top jamb mount, the Sargent 25-CPSH hold-open parallel arm with compression stop for the same closers, and on the Falcon side the SC60A-3049DS hold-open dead stop parallel arm and the SC70A-3049/PA hold open arm with PA bracket for SC70A closers. Each of those is tied to its own closer family, so match the arm to the closer body already on the door.

6) What is the Sargent equivalent of an LCN 4020-3077L long arm assembly?

There is no direct Sargent match for the 4020-3077L, because the LCN part is a long arm assembly built for 4020 Series closers and includes the 4020-79LR deep reveal adapter for extended frame depths. The closest Sargent replacement arms serve different closer families and different stop functions: the Sargent 25-H is a hold-open arm for 351 and 281 closers in standard and top jamb mount, while the 25-CPS is a parallel arm with compression stop for the same 351/281 closers. Both Sargent arms are Grade 1 heavy duty. If the closer body on the door is an LCN 4020, stay with the 4020-3077L; the Sargent arms will not mount to it.

7) The Falcon 8230-3077PLCM has 3077 in the part number like the LCN 4020-3077L. Are they interchangeable?

No. The shared 3077 digits are coincidence between two manufacturers' numbering schemes. The Falcon 8230-3077PLCM is a standard arm with track for 8230 Series automatic door operators in the 8200 Series, so it drives a powered operator through a track. The LCN 4020-3077L is a non-handed long arm assembly with the 4020-79LR deep reveal adapter for 4020 Series manual door closers. Different manufacturer, different closer family, different arm architecture - a track arm for an operator will not substitute for a long reveal arm on a 4020 closer.

8) Our door is center hung on a floor pivot. Will the LCN 4020-3077L long arm work on it?

No. The 4020-3077L is a surface closer arm for LCN 4020 Series closers, with the 4020-79LR adapter to reach across a deep frame reveal on a conventionally hung door. For a center hung door on a floor pivot, the Falcon OHC100A-DP is a center hung floor pivot with end load arm for OHC100 Series door closers, which is the hanging arrangement that application calls for. Establish how the door is hung before choosing between them, because the two are not alternates for the same opening.

9) Will replacing the arm on my 4020 closer keep the door ADA compliant?

The 4020-3077L is ADA compliant when installed correctly on a compatible 4020 Series closer. The arm does not set opening force on its own, that comes from the closer's spring size and valve adjustment, so an ADA opening stays ADA as long as the closer itself is adjusted to the required force after the arm goes on.

10) What finishes does the LCN 4020 long arm assembly come in?

Thirteen finishes, so the arm can be matched to hardware already on the opening: 616 satin bronze blackened, 632 bright brass, 633 satin brass, 639 satin bronze, 646 satin nickel, 651 bright chrome, 652 satin chrome, 689 aluminum, 690 statuary bronze, 691 light bronze, 693 gloss black, 695 dark bronze, and 696 brass. For a repair on an existing building, match the finish code on the closer cover rather than eyeballing the color.

11) If the closer body itself is worn out, is replacing the arm still the right call?

Replacing only the arm makes sense when the 4020 Series closer body is sound and the arm or reveal condition is the problem; the LCN 4020-3077L is a genuine replacement part for commercial 4020 Series closers and is non-handed, so it serves both left-hand and right-hand doors. If the body is spent, a complete closer is the cleaner buy - the Sargent 1431-CPS TB EN is a Grade 1 heavy duty surface door closer supplied with a parallel arm and compression stop, so it arrives as a full closer and arm package rather than a component. Note that swapping to a complete closer changes the mounting and the arm function on that opening.

12) We standardize hardware across a portfolio. Does choosing the LCN 4020-3077L arm affect ADA compliance compared with other closer arms?

The LCN 4020-3077L is ADA compliant when properly installed with compatible 4020 Series door closers, and it is a commercial-rated component. Where compliance work is driven by grade documentation, the Sargent alternatives carry a stated rating: the 1431-CPS TB EN surface closer, the 25-CPS, the 25-CPSH, and the 25-H are all Grade 1 heavy duty. For a facility standard, the practical split is that the LCN part keeps an existing 4020 closer in service on a deep reveal opening, while the Sargent Grade 1 units are specified as complete closers or as arms for 351 and 281 closer bodies.

13) Is the LCN 4020-3077L arm suitable for a high-traffic commercial entrance or is it a residential part?

Commercial. The 4020-3077L is a commercial-rated component used on office buildings, schools, hospitals, retail, warehouses, multi-tenant residential and government facilities. It is a genuine LCN part, which matters on an institutional opening where an aftermarket arm can change how the closer performs.

14) Which of these arms is non-handed, and does that matter when picking a replacement?

The LCN 4020-3077L is non-handed, so one part covers both left-hand and right-hand doors and a single item number can be stocked for a mixed set of openings. Among the alternatives, selection is driven by the closer family and mount instead: the Sargent 25-H is specified for 351 and 281 closers in standard and top jamb mount, the Falcon SC70A-3049/PA for SC70A Series closers, and the Falcon 8230-3077PLCM for 8230 Series automatic operators in the 8200 Series. For a maintenance shelf, the non-handed LCN arm reduces the number of distinct parts to carry for 4020 closers, and it is offered in finishes including 689 aluminum, 690 statuary bronze and 695 dark bronze to match existing hardware.

How fast can I get the LCN 4020-3077L 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 4020-3077L 689 come with a warranty?

Absolutely. The LCN 4020-3077L 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 4020-3077L 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 4020-3077L 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 4020-3077L Long Arm Assembly with Deep Reveal Adapter

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