LCN 4003T-POWDER Heavy Duty Su...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$787.00
$579.00
LCN LCN 4003T Surface-Mounted Heavy Duty Door Closer - Powder Coated Finish LCN-4003T-POWDER

LCN 4003T-POWDER Heavy Duty Surface-Mounted Door Closer with Powder Coated Finish and Fire Door Control

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Model: 4003T-STD AL
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$787.00
$579.00
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LCN 4003T Heavy Duty Surface-Mounted Door Closer with Powder Coated Finish and Fire Door Control

Professional Fire and Smoke Barrier Door Control Solution

The LCN 4003T Heavy Duty Surface-Mounted Door Closer delivers reliable control for fire and smoke barrier doors with maximum swing of 90°. This UL and cUL listed closer features a cast iron cylinder with 1-1/2" diameter piston and forged steel arm construction, designed for use with SEM 7850 wall magnet systems. Tested and certified under ANSI/BHMA A156.4 Grade 1 standards for demanding commercial applications with 30-year warranty coverage.

Professional Features & Benefits

  • Heavy-Duty Construction: Cast iron cylinder with full-complement bearing and 1-1/2" diameter piston provides exceptional durability for high-traffic applications.
  • Fire and Smoke Door Control: Specifically designed to control fire and smoke barrier doors with maximum 90° swing for critical safety applications.
  • Grade 1 Performance: Tested and certified under ANSI/BHMA A156.4 Grade 1 standards ensuring reliable operation in commercial environments.
  • All-Weather Reliability: All-weather fluid and forged steel arm construction maintain consistent performance across temperature variations.
  • SEM 7850 Compatibility: Engineered for use with SEM 7850 wall magnet systems for integrated fire door control solutions.
  • ADA Compliance: Meets ADA requirements for accessible door operation in commercial facilities.
  • Universal Installation: Non-handed design with included wood and machine screw pack simplifies installation on various door configurations.
  • Manufacturer Warranty: 30-year warranty provides long-term confidence and protection for commercial installations.

Technical Specifications

  • ADA Compliant: Yes
  • BAA Qualified: Yes
  • Closer Size: 3
  • Commercial/Residential: Commercial
  • Cover Type: Plastic/Metal
  • Delay Function: No
  • Department: Door Hardware
  • Duty Level: Heavy Duty
  • Finish Type: Powder Coat
  • Fluid Type: All-Weather
  • MAP Policy: Yes
  • Mounting Detail: Surface - Hinge (Pull Side)
  • Mounting Location: Pull Side
  • Mounting Method: Surface Mount
  • Product Category: Door Controls
  • Product Group: Door Controls
  • Product Model: 4003T
  • Product Subgroup: Door Closers - Surface Mounted
  • Product Substrate: Iron
  • Product Type: Surface Mounted Door Closers
  • Series: 4000 Series
  • Subcategory: Door Closers - Surface Mounted
  • Warranty: 30 Year

Professional Applications

  • Fire and Smoke Barrier Door Systems
  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose LCN Quality?

LCN door closer products deliver professional-grade reliability with cast iron cylinder construction and forged steel components rated for Grade 1 performance under ANSI/BHMA A156.4 standards. The 30-year warranty demonstrates LCN's commitment to long-term durability in demanding commercial applications. Engineered for critical fire and smoke door control where dependable performance is essential for life safety compliance.

Product Specs

Series:
4000 Series
Duty Level:
Heavy Duty
ADA Compliant:
Yes
BAA Qualified:
Yes
Warranty:
30 Year
Closer Size:
3
Mounting Detail:
Surface - Hinge (Pull Side)
Mounting Location:
Pull Side
Subcategory:
Door Closers - Surface Mounted
Product Group:
Door Controls
Product Subgroup:
Door Closers - Surface Mounted
Product Type:
Surface Mounted Door Closers
Finish Type:
Powder Coat
Fluid Type:
All-Weather
Commercial/Residential:
Commercial
MAP Policy:
Yes
Product Model:
4003T
Cover Type:
Plastic/Metal
Delay Function:
No
Mounting Method:
Surface Mount
Product Category:
Door Controls
Product Substrate:
Iron
Department:
Door Hardware

LCN 4003T-STD AL – Frequently Asked Questions

1) Will the LCN 4003T work on a fire-rated door held open by a magnet?
That's exactly what the 4003T is built for. It's the fire and smoke barrier door version of the LCN 4000 Series, meant to run with SEM 7850 wall magnet systems: the magnet holds the door open, and when the fire alarm drops the magnet, the 4003T closes and latches the opening. Maximum swing with that arrangement is 90 degrees, so plan the wall magnet location inside that arc. It's UL and cUL listed.
2) Is the LCN 4003T door closer a fixed size or can I adjust the spring power?
Fixed. The 4003T is a size 3 closer, not an adjustable size 1-6 unit, so the spring power is set at the factory and you match the closer to the door rather than dialing it in on site. If you need one closer that covers a range of door widths across a building, an adjustable-spring model is the better buy: the BEST EHD9000 Series is heavy duty Grade 1 with adjustable spring sizes 1-6, and the Sargent 1431 Powerglide is a heavy duty Grade 1 closer with adjustable spring power. Also note the 4003T has no delayed action.
3) Do I need to order the LCN 4003T handed for a left or right hand door?
The closer itself is non-handed, so one part number covers both swings and the screw pack (wood and machine screws) comes in the box. Handing only enters if you upgrade the cover: the standard plastic cover is non-handed, while the metal cover has to be ordered right hand (MC-RH) or left hand (MC-LH) to match the door.
4) Is the LCN 4003T strong enough for a high traffic entrance or exterior door?
Heavy duty, yes. The cylinder is cast iron with a full-complement bearing and a 1-1/2 inch diameter piston, and the arm is forged steel, which is the construction you want on a door that gets used all day. It's certified Grade 1 under ANSI/BHMA A156.4. The fluid is all-weather, so it holds its closing speed through temperature swings on an exterior opening rather than slamming in summer and stalling in winter.
5) Does the LCN 4003T meet ADA opening force requirements?
Yes, it's ADA compliant, which matters on the accessible route doors in schools, healthcare and government work where opening force gets inspected. It's also BAA qualified, so it satisfies Buy American Act sourcing requirements on federally funded projects. Both of those are on the record for this closer, not assumed from the series.
6) Can I mount the 4003T on the push side or top jamb like a tri-mount closer?
The LCN 4003T is set up for surface hinge mounting on the pull side. An opening that needs push side or top jamb mounting calls for a tri-mount closer instead: the Dexter DCH4000 Series and DCM1000 Series are Grade 1 surface closers for regular, parallel, or top jamb mounting, the Norton Rixson 8501A is a Grade 1 tri-mount with adjustable size 1 through 6 spring, and the Arrow DCN325 is a Grade 1 tri-pack regular or parallel arm closer. The Dexter DCH1000 Series adds a full cover.
7) Which door closer should I use if I need adjustable spring size instead of a fixed size 3?
The LCN 4003T is built at closer size 3, a single spring power. When the door width or wind conditions are not known at order time, an adjustable closer is the safer buy: the BEST EHD9000 Series is heavy duty Grade 1 with adjustable spring sizes 1 through 6, the Sargent 1431 Powerglide is heavy duty Grade 1 with adjustable spring power, the Imperial USA TC4300 Series is heavy duty size 1 through 6, and the Dorma 8916-JT is heavy duty Grade 1 adjustable size 1 through 6. For lighter interior doors, the Arrow DCN314 covers adjustable spring size 1 through 4.
8) I need a hold open closer, not a fire door closer. What should I order?
The LCN 4003T is a non-hold-open closer intended for fire and smoke barrier doors used with SEM 7850 wall magnets, where the door is held by the magnet and released on alarm. For an opening where the closer itself should hold the door open, look at the Accentra 51 Series, which is a tri-packed hold open arm, or the Orca Hardware BHDC1958HO/PA, a hold open closer with a parallel bracket. The Stanley Security A45-501HL is a long hold open arm closer configured for top jamb mounting.
9) The 4003T is limited to 90 degrees of swing. What closer allows a wider opening?
The LCN 4003T controls fire and smoke barrier doors to a maximum swing of 90 degrees. Where the opening needs to swing further, the Norton Rixson 1600 Series is a Grade 1 tri-mount surface closer rated for 180 degree swing.
10) Is a Grade 2 closer like the Cal-Royal 400 the same thing as the LCN 4003T?
No. The LCN 4003T is certified to ANSI/BHMA A156.4 Grade 1. The Cal-Royal 400 Series is a Grade 2 commercial hydraulic closer, a different certification tier, so it does not substitute where a specification calls for Grade 1. Cal-Royal Grade 1 options include the 500S barrier free closer with adjustable back-check, the 700S dual valve sized closer with adjustable tube arm, and the N900PBF barrier free hydraulic closer.
11) Is the Dormakaba 7303 or 7414 a direct replacement for an LCN 4003T on a fire door?
Both are Grade 1 surface closers, but they are medium duty: the Dormakaba 7303 Series is a standard duty painted closer and the 7414 is a medium duty closer in size 1 through 4. The LCN 4003T is heavy duty with a cast iron cylinder and 1-1/2 inch piston. On a high traffic fire or smoke barrier opening, match duty level with a heavy duty Grade 1 closer such as the BEST EHD9000, Falcon SC71A, or Sargent 1431.
12) What finishes does the LCN 4003T powder coated closer come in?
Six powder coat finishes: 689 aluminum, 690 statuary bronze, 691 light bronze, 693 gloss black, 695 dark bronze and 696 brass. That's the full run, so if you're standardizing a stairwell or corridor of fire doors you can hold one finish across every opening. Powder coat is the cost-effective option here; it is a painted finish, not a plated one.
13) What's the difference between the 4003T and a standard LCN 4000 Series closer?
The T is the fire and smoke door control build. A standard 4000 Series closer just closes the door; the 4003T is set up to work with SEM 7850 wall magnets so the door can stand open legally and close on alarm, with a 90 degree maximum swing. If the door is not part of a hold-open fire system, you don't need the T version. If it is, don't substitute a plain closer, because the hold-open and release behaviour is the whole point.
14) Should I use a plastic or metal cover on the LCN 4003T?
Plastic cover (PC) is the default and is fine for interior office and residential corridors. Go metal in anything that takes abuse or vandalism, a school, a warehouse, a stairwell, and order it handed: MC-RH for right hand, MC-LH for left hand. The cover is a separate selection from the closer finish, so specify both when you order.
15) I need a closer with hold open or delayed action instead. What should I look at?
The 4003T has no delayed action and no mechanical hold-open arm, it closes on release from the wall magnet. For a genuine hold-open arm, the Accentra 51 Series is a tri-packed hold open closer covering sizes 1-6, and the Orca Hardware BHDC1958HO/PA is a hold open closer with a parallel bracket. For delayed action, so a wheelchair or a cart has time to clear the opening, look at the Orca Hardware BHDC1958DA/PA or BHDC2011DA/PA, both regular arm with parallel bracket for 1-3/4 inch doors. Don't add a mechanical hold-open to a fire door; that's what the magnet system is for.
16) What's a comparable heavy duty Grade 1 closer to the LCN 4003T from another brand?
For straight heavy duty Grade 1 surface closers, the closest peers are the BEST HD8000 Series, the BEST EHD9000 Series (extra heavy duty, adjustable 1-6), the Falcon SC71A, the Sargent 1431 Powerglide and the Sargent 281, which is cast iron like the LCN. The Dormakaba 8616 with flat arm is another heavy duty Grade 1 option. Understand the tradeoff before you swap: none of those are specified here as fire-magnet closers, so if the opening runs on a SEM 7850 hold-open system, stay with the 4003T.
17) Do I need to buy mounting hardware separately for the LCN 4003T?
No. Both wood and machine screws ship with the closer, so it covers a wood door or a hollow metal door and frame without a separate fastener order. The screw pack plus the non-handed body means one carton handles either swing at the opening. The wall magnet itself, the SEM 7850, is a separate item on a fire hold-open installation.
18) What is a lighter duty alternative to the LCN 4003T for low traffic interior doors?
The LCN 4003T is a heavy duty closer with a cast iron cylinder, sized for high traffic commercial openings. On a low traffic interior door, lighter closers fit the application: the BEST SL6000 Series is a light duty Grade 1 surface closer with adjustable spring sizes, the Norton Rixson 160 Series is a light duty Grade 1 light commercial closer with adjustable spring, and the Falcon SC91A is a light duty Grade 3 cast aluminum closer. The BEST HD7000 Series sits between them as medium duty Grade 1 with backcheck control.
19) Which surface closer has a delayed action feature? The 4003T does not.
The LCN 4003T has no delay function. Where a healthcare or accessibility opening needs the door to hold near full open before it begins closing, the Orca Hardware BHDC1958DA/PA and BHDC2011DA/PA are delayed action closers with a regular arm and parallel bracket, both listed for 1-3/4 inch doors.
20) Which closers use an aluminum body instead of cast iron like the LCN 4003T?
The LCN 4003T uses a cast iron cylinder with a forged steel arm. Closers built with aluminum bodies include the Sargent 1331, a Grade 1 medium duty closer with a universal aluminum body, and the Falcon cast aluminum line: the SC71A heavy duty, the SC81A medium duty, and the SC61A light to medium duty, all Grade 1 except the SC91A, which is Grade 3.
21) What closer works with a slide track arm instead of the standard arm on the 4003T?
The LCN 4003T uses a forged steel arm in a surface hinge, pull side arrangement. Where the design calls for a slide track rather than a projecting arm, the Corbin Russwin DC5230 Series is a Grade 1 surface closer with a slide track arm standard, pull side mounting, for 1-3/4 inch doors. For a double lever regular arm on the pull side, the Corbin Russwin DC6200 and DC8200 Series are Grade 1 closers on the same 1-3/4 inch door thickness.
22) I searched Stanley Security 327 and 341 alongside door closers. Are those closer substitutes?
No. The LCN 4003T is a surface mounted hydraulic door closer. The Stanley Security 327 and 341 are wardrobe pivots, hanging hardware rather than closing hardware: the 327 is for 1-3/8 inch or 1-3/4 inch doors up to 150 pounds, and the 341 is for flush recessed or overlay doors from 1-1/8 inch to 1-3/8 inch. Neither controls the closing cycle. For a closer substitute, stay within surface mounted closers such as the BEST HD8000 or Sargent 281.
23) Which heavy duty closers ship with a cover, and which come less cover?
The LCN 4003T comes with a cover and can be ordered with a plastic cover or a handed metal cover. Among heavy duty peers, the Design Hardware 316 Series is supplied with a cover and the Dexter DCH1000 Series is a Grade 1 tri-mount closer with a full cover. The Arrow DCN314 and DCN325 are supplied less cover, so a cover has to be specified separately for those.
24) What heavy duty closers can I standardize on across a facility alongside the LCN 4003T?
The LCN 4003T is a commercial heavy duty Grade 1 closer for fire and smoke barrier openings. A facility standardizing on heavy duty closers across mixed openings can pair it with the Design Hardware 116 Series and 416 Series, both heavy duty with tri-packed non-hold-open arms, the Dormakaba 8616 AF86P heavy duty Grade 1 flat arm tri-pack, and the Norton Rixson 1600BC Series heavy duty Grade 1 closer for aluminum storefront doors with tri-style mounting.
25) What Grade 1 ADA compliant closers are available besides the LCN 4003T?
The LCN 4003T is ADA compliant and Grade 1. Other Grade 1 closers built around ADA operating force include the Calibre CA9901, a tri-pack arm size 2 through 5 ADA surface mount closer, the Calibre CA4001 with adjustable spring tension for ADA, the Calibre CA8001P parallel arm size 1 ADA closer, and the Imperial USA TC4300 Series, a heavy duty size 1 through 6 ADA closer. The Calibre CA5501 is a Grade 1 standard arm surface mount closer.
How fast can I get the LCN 4003T-STD 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 LCN 4003T-STD AL come with a warranty?
Absolutely. The LCN 4003T-STD 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 LCN 4003T-STD 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 LCN 4003T-STD AL from ZenSupply?
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Product Reviews

  • 5
    High Quality Product

    Posted by Jen Magnani on May 13th 2025

    These were a perfect replacement for our existing closure.

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