Sargent L980S Lockable Steel M...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,948.73
$1,132.83
Sargent L980S Lockable Steel Mullion 86" with Gray Prime Coat Finish

Sargent L980S Lockable Steel Mullion 86" with Gray Prime Coat Finish

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Model: L980S GRAY 86
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,948.73
$1,132.83
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Sargent L980S Lockable Steel Mullion 86" Grade 1 ANSI/BHMA Rated

Professional Lockable Mullion Solution for Non-Fire Rated Openings

The Sargent L980S is a lockable steel mullion designed for versatile installation in non-fire rated openings. This 86" mullion features Grade 1 ANSI/BHMA rating with steel construction and gray prime coat finish. Available in multiple lengths up to 120" maximum optional height, this rectangular mullion accommodates 1 155/1239" standard cylinder size and provides reliable security for commercial door applications.

Professional Features & Benefits

  • Standard Height Configuration: 86" standard height with maximum optional height up to 120" for flexible installation requirements.
  • Grade 1 ANSI/BHMA Rating: Meets highest commercial-grade standards for durability and performance in demanding applications.
  • Heavy-Duty Steel Construction: Steel material provides exceptional strength and long-term reliability for commercial installations.
  • Lockable Security Design: Accommodates 1 155/1239" standard cylinder size for keyed access control and security management.
  • Versatile Application Range: Designed for use in any non-fire rated openings with rectangular shape and Size 2 configuration.
  • ULC Listed Compliance: ULC listed certification ensures code compliance and quality assurance for professional installations.
  • Manufacturer Warranty: 1-year limited warranty provides added confidence and protection for commercial applications.

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

Why Choose Sargent Quality?

Sargent mullion products deliver professional-grade reliability with steel construction rated to Grade 1 ANSI/BHMA standards for demanding commercial applications. The 1-year limited warranty and ULC listing provide additional assurance of quality and code compliance. Engineered for dependable performance where secure access control and structural integrity are 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 L980S GRAY 86 – Frequently Asked Questions

1) What does a removable mullion like the Sargent L980S actually do on a pair of doors?
A mullion is the vertical steel post that stands between a pair of doors in the opening, giving each leaf something to latch into. That lets you put a rim exit device on each leaf instead of vertical rod devices, which is the simpler and lower maintenance way to secure a pair. The L980S is the lockable version: it takes a cylinder so it can be key-locked in place, and it comes out when you need the full clear opening for moving equipment or furniture through.
2) Does a cylinder come with the Sargent L980S lockable mullion?
The mullion is prepped to accept a standard cylinder for the lock function, but the cylinder is a separate order. Specify it in the keyway your building is already keyed to so the mullion drops into your existing master key system, and match the finish to the rest of the opening. A locksmith ordering for a keyed facility should send the cylinder request through with the mullion rather than after, since the mullion is useless as a lockable unit until the cylinder is in it.
3) The opening is fire rated - can I use the Sargent L980S mullion there?
No. The Sargent L980S is designed for non-fire rated openings, so a fire rated pair of doors calls for a mullion listed for that use. Among the alternatives in the same class, Stanley Security offers the QRM111 in the QRM100 Series and the QRM311 in the QRM300 Series, both Grade 1 mullions; verify the fire label requirement for the specific opening against the mullion you select before ordering.
4) What is a comparable Grade 1 mullion if the Sargent L980S is not the one I want?
The Stanley Security QRM111 is a Grade 1 mullion offered in the QRM100 Series, and the Stanley Security QRM311 is a Grade 1 mullion in the QRM300 Series. Both are Grade 1 like the Sargent L980S, which is an 86 inch lockable steel mullion with a gray prime coat finish for non-fire rated openings. Because the L980S is lockable and accepts a cylinder for keyed removal, confirm that a keyed-removable function is what the opening actually needs before treating a standard mullion as the same part.
5) Should I use a removable mullion with rim exit devices, or vertical rod devices on the pair?
Two different approaches to the same pair. A mullion with a rim device on each leaf puts all the latching at one point in the middle of the opening, so there are no rods to fall out of adjustment and no floor strike to fill with grit. That is the usual choice for high traffic entries and for anywhere maintenance is thin on the ground. Vertical rod devices need no mullion at all, so the opening is always clear, which matters where carts, gurneys, or pallets go through daily. The L980S splits the difference on that last point: it is lockable and removable, so you get mullion latching day to day and a clear opening when you pull it.
6) What finish does the Sargent L980S mullion come in, and can it be painted?
Gray prime coat. That is a primer, not a final finish, so it is meant to be field painted to match your frames or your building colors. On a storefront or an office entry where the mullion sits in plain view, budget for paint as part of the install. If you need a factory finish out of the box instead, a prime coat mullion is the wrong pick.
7) Is a lockable mullion worth it over a plain removable one for an apartment or office building?
It depends who has access to the opening. A plain removable mullion lifts out by hand once you know the trick, which is fine on a back-of-house pair but a security gap on a public entrance. The L980S locks with a cylinder, so only a keyed staff member can pull it. On a multi-tenant residential entry, a retail storefront, or any door where the pair faces the street, that is the difference between a mullion that secures the opening and one that just fills it.
8) Where does the Sargent L980S mullion get installed, on the doors or on the frame?
On the frame, not on the doors. The mullion mounts into the head of the frame and to the floor or threshold, standing free between the two leaves. Neither door leaf is machined for it. What the doors do need is a rim exit device on each leaf whose latch strikes the mullion, so plan the device and its strike into the same order.
9) What is the difference between the Stanley QRM100 and QRM300 series mullions?
They are separate series within Stanley Security's Grade 1 mullion line: the QRM111 belongs to the QRM100 Series and the QRM311 belongs to the QRM300 Series, both described as standard mullions. For a distributor matching a part number, the series digit is the identifying difference, so order against the full part number rather than the series alone. The Sargent equivalent in the same Grade 1 class is the L980S, a lockable steel mullion at 86 inches standard height with a maximum optional height of 120 inches.
10) I need a mullion that stays fixed in the opening - is a standard mullion a substitute for the Sargent L980S?
They serve the same opening but not the same operation. The Sargent L980S is lockable, taking a cylinder so the mullion can be secured and released for keyed removal when the full width of the opening is needed. The Stanley Security QRM111 and QRM311 are described as standard Grade 1 mullions. If the door pair never needs to be opened to full width for moving equipment or freight, a standard mullion covers it; if it does, the lockable design is the one that matches.
11) I am standardizing mullions across a facility - which Grade 1 options should I be looking at?
For a facility standard on non-fire rated pairs, the Sargent L980S is a Grade 1 ANSI/BHMA steel mullion, ULC listed, at 86 inches standard height with a maximum optional height of 120 inches and a gray prime coat finish that can be field painted to match. On the Stanley Security side, the QRM111 in the QRM100 Series and the QRM311 in the QRM300 Series are also Grade 1 mullions. Standardizing on one manufacturer keeps cylinder keying and spare stock consistent across buildings.
How fast can I get the Sargent L980S GRAY 86 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 Sargent L980S GRAY 86 come with a warranty?
Absolutely. The Sargent L980S GRAY 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 L980S GRAY 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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