Sargent L980A Lockable Mullion...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,380.52
$2,287.46
Sargent L980A Lockable Mullion - Anodized Aluminum T-Shape 2-1/2" x 3" Commercial Grade

Sargent L980A Lockable Mullion - Anodized Aluminum T-Shape 2-1/2" x 3" Commercial Grade

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Model: L980A 28 86
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$3,380.52
$2,287.46
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Sargent L980A Lockable Mullion 2-1/2" x 3" T-Shape Anodized Aluminum Commercial Grade

Professional Removable Center Support for Paired Door Applications

The Sargent L980A Lockable Mullion delivers commercial-grade center support for paired door openings with T-shape aluminum construction measuring 2-1/2" x 3". This Grade 1 ANSI/BHMA rated mullion provides secure lockable support for exit devices and latch hardware while allowing quick removal when full clear opening access is needed. Available in standard 86" height with optional heights up to 120", the anodized aluminum finish offers enhanced corrosion resistance for storefront and high-traffic environments.

Professional Features & Benefits

  • Commercial T-Shape Design: 2-1/2" x 3" aluminum construction provides robust center support for paired door applications with professional appearance.
  • Grade 1 ANSI/BHMA Rating: Meets highest commercial standards for durability and performance in demanding applications.
  • Flexible Height Options: Standard 86" height with maximum optional height of 120" accommodates various opening requirements.
  • Anodized Aluminum Construction: Enhanced corrosion resistance and professional appearance ideal for storefront and high-traffic commercial environments.
  • Lockable Design: Provides secure center support that can be locked in place or quickly removed for full clear opening access when needed.
  • Cylinder Compatibility: Less cylinder configuration accepts #41 cylinder with 1-1/8" standard size for integration with existing keying systems.
  • ULC Listed: Third-party certification ensures compliance with safety and performance standards.
  • Manufacturer Warranty: 1-year limited warranty provides added confidence and protection.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Storefront and Tenant Entry Pairs
  • Educational Facilities and Universities
  • Healthcare and Public Buildings
  • Doors with Rim Exit Devices Requiring Mullion Support
  • Openings Needing Removable Center Support for Equipment Access
  • High-Traffic Commercial Environments
  • Multi-Tenant Commercial Properties

Why Choose Sargent Quality?

Sargent L980A mullion products deliver professional-grade reliability with anodized aluminum construction rated to Grade 1 ANSI/BHMA standards for demanding commercial applications. ULC listed certification and 1-year limited warranty ensure dependable performance where secure, removable center support is essential.

Product Specs

Product Group:
Exit Devices and Trim
Product Subgroup:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Type:
Mullions
Commercial/Residential:
Commercial
Parts and Accessories Type:
Installation Accessories
Product Attribute:
Parts and Accessories
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Sargent L980A 28 86 – Frequently Asked Questions

1) What does a Sargent L980A mullion do on a pair of doors with rim exit devices?
It's a removable center post that stands between the two leaves of a pair, giving each rim exit device something to latch into. Rim devices latch to a strike, not to each other, so a pair without a center mullion can't take rim devices. The L980A locks in place for normal use and pulls out when you need the full clear opening for moving equipment or furniture through.
2) How tall a Sargent L980A mullion do I need for my opening?
Two heights are sold: 86 inches, which covers a standard commercial opening, and 120 inches for tall storefront or glass-front entries. Measure the frame opening height and take the mullion that matches or exceeds it; the mullion has to run frame head to threshold to hold both strikes.
3) What is the Sargent L980A mullion's cross section, and will it fit between my door leaves?
The tube is a T-shape aluminum section measuring 2-1/2 by 3 inches. That's the space it occupies at the center of the pair, so the meeting stiles need to clear it. On a storefront pair sized for a mullion this is standard, but if your leaves currently meet with an astragal and no gap, check the center clearance before ordering.
4) Does the Sargent L980A mullion come with a cylinder, or do I have to order one separately?
It ships less cylinder. The lock takes a #41 cylinder in the 1-1/8 inch standard size, which you order separately and have keyed into your building's existing system. Locksmiths standardizing a property usually spec the mullion cylinder to the same keyway as the entry doors so one key handles the whole opening.
5) What is the Stanley equivalent of a Sargent L980A removable mullion?
The Stanley Security QRM111 is a Grade 1 mullion from the QRM100 Series and covers the same job as the Sargent L980A: a removable center support between paired doors carrying rim exit device strikes. The L980A is Grade 1 ANSI/BHMA with a T-shape anodized aluminum section measuring 2-1/2 inch by 3 inch, offered in 86 inch and 120 inch heights. When you swap in a QRM111, confirm the mullion height against the frame opening and confirm your exit device strikes mount to the QRM100 Series section, since strike brackets are keyed to the mullion they were made for.
6) If I do not need a keyed mullion, is there a simpler option than the Sargent L980A?
The L980A is the lockable version, taking a #41 cylinder at 1-1/8 inch standard size so the mullion can be locked in place and released with a key. If the opening only needs a center support that stays put and no keyed release, a standard mullion such as the Stanley Security QRM111 or QRM311, both Grade 1, covers that duty without the cylinder. Keep the L980A where staff need to pull the mullion for equipment access on a controlled key.
7) Is the Sargent L980A mullion Grade 1, and is it listed?
Grade 1 ANSI/BHMA, and ULC Listed. That's the rating institutional and MRO specs on schools, healthcare, and public buildings normally call for on a center mullion at an exit pair.
8) Should I use a removable mullion or switch to vertical rod exit devices on my pair of doors?
A mullion keeps you on rim devices, which are the simplest and easiest exit hardware to service, and the L980A comes out when you need the whole opening clear. The trade-off is a post standing in the middle of the opening every other day. Surface or concealed vertical rod devices latch at the head and threshold instead, so the pair is always fully clear, but you're maintaining rods and top and bottom latches on each leaf. Pick the mullion when the opening is mostly used one leaf at a time and occasionally needs full width; pick vertical rods when wide loads pass daily.
9) What other Grade 1 removable mullions could I use instead of the Sargent L980A?
Stanley Security offers Grade 1 mullions in two families, the QRM111 from the QRM100 Series and the QRM311 from the QRM300 Series. They're the cross-brand equivalents when you're standardizing on Stanley exit hardware. Stay with the L980A when the rest of the opening is Sargent, since the mullion cylinder can then be keyed into the same system as the Sargent exit trim.
10) Can I use the Sargent L980A on a single door?
No. It's a center mullion for paired door openings only, sitting between two leaves so each rim device has a strike. A single door with a rim device latches to a strike mounted on the frame jamb, and no mullion is involved.
11) Difference between the Stanley QRM111 and QRM311 mullions when replacing a Sargent L980A?
They are two different Stanley mullion series: the QRM111 is in the QRM100 Series and the QRM311 is in the QRM300 Series, both Grade 1. A distributor pulling a substitute for the Sargent L980A should quote the series that matches the exit devices already on the pair, because rim device strike brackets are series specific. The L980A itself is Grade 1 ANSI/BHMA in a 2-1/2 inch by 3 inch T-shape aluminum section, so either Stanley series lands in the same grade class.
12) Can a Stanley QRM311 mullion be used on an opening speced for a Sargent L980A at 120 inches?
Height is the first thing to check. The Sargent L980A is built in 86 inch and 120 inch heights, so a tall storefront pair speced around the 120 inch L980A needs a mullion cut to that same opening height. The Stanley QRM311 is a Grade 1 mullion in the QRM300 Series; confirm the QRM300 Series height you are quoting matches the frame before substituting, and verify the strike prep for the rim devices already hung on the pair.
13) For a facility standardizing on Grade 1 mullions, what are the options besides the Sargent L980A?
The Sargent L980A is Grade 1 ANSI/BHMA and ULC listed, in anodized aluminum, which is the usual bar for storefront and high traffic pairs in schools, healthcare, and public buildings. Stanley Security offers Grade 1 mullions in two series, the QRM111 in the QRM100 Series and the QRM311 in the QRM300 Series. Standardizing a facility on one series matters more than the brand, because mullion strike brackets and storage of spare mullions both go by series and height.
14) What finishes does the Sargent L980A lockable mullion come in?
Two: satin aluminum clear anodized, which is the usual match for aluminum storefront framing, and 10B dark oxidized satin bronze, oil rubbed, for openings with dark bronze frames and hardware. Both are offered in the 86 inch and 120 inch heights, so height doesn't limit your finish choice.
15) Why anodized aluminum instead of a steel mullion for a storefront entry?
The anodized aluminum construction resists corrosion, which is what matters on an exterior storefront pair that sees weather and constant handling, and it matches aluminum entry framing visually. It's also lighter to lift in and out, which is the practical difference when a property manager's staff removes and reinstalls it regularly rather than once a year.
16) Will a Sargent L980A mullion match the dark bronze hardware already on my doors?
The L980A is made in a Satin Aluminum Clear Anodized finish and in 10B dark oxidized satin bronze, oil rubbed, so a pair with dark bronze pulls and exit devices can take the 10B mullion rather than a clear aluminum one. The Stanley QRM111 and QRM311 are the Grade 1 mullion alternatives to consider, but match the mullion finish to the exit device trim on the same opening, since the mullion sits at eye level in the middle of a glass front pair.
How fast can I get the Sargent L980A 28 86 delivered?
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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 Sargent L980A 28 86 come with a warranty?
Absolutely. The Sargent L980A 28 86 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 Sargent L980A 28 86?
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
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