Zero International 139A Meetin...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$170.95
Zero 139A Single Door Meeting Stile Astragal w/ Sponge Neoprene Seal

Zero International 139A Meeting Stile Astragal with Closed Cell Sponge Neoprene Insert

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Model: 139AA36

In Stock (leaves warehouse same day if ordered before 3pm ET)

$170.95
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Zero International 139A Meeting Stile Astragal with Closed Cell Sponge Neoprene Insert

The Zero International 139A is an aluminum head & jamb meeting stile astragal engineered for single active doors or coordinating door pairs, featuring a closed cell sponge neoprene insert for reliable smoke, draft, and sound control. Available in 84″ and 96″ lengths that can be cut to size in the field, this astragal is BHMA Certified and Fire Rated to UL10C with Positive Pressure classification, making it a dependable choice for commercial door assemblies where code compliance and acoustic performance matter.

Key Features

  • Available Lengths: Supplied in 84″ and 96″ lengths, cut to size in the field for a precise fit on the job site.
  • Closed Cell Sponge Neoprene Insert: Provides an effective seal against smoke, drafts, and airflow along the meeting stile of active or coordinating doors.
  • Mill Aluminum Finish (A): Durable aluminum construction in a mill finish suited to commercial door and frame applications.
  • Fire Rated Construction: Rated to UL10C with Positive Pressure classification for use on fire-rated door openings.
  • Smoke and Draft Control: Designed to restrict the passage of smoke and drafts at the meeting stile for improved life-safety performance.
  • Sound Rated Performance: Suitable for acoustic door systems where sound attenuation at the meeting stile is required.
  • BHMA Certified: Meets recognized industry certification standards for builders hardware.

Certifications & Compliance

  • BHMA Certified
  • Fire Rated – UL10C – Positive Pressure

Technical Specifications

  • Commercial/Residential: Commercial
  • Product Group: Door Trim and Accessories
  • Product Subgroup: Astragals, Gaskets and Weatherstripping
  • Product Type: Astragals
  • Department: Door Hardware

Typical Applications

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

Why Zero International 139A?

Zero International 139A astragals deliver dependable meeting stile protection with BHMA Certified construction and UL10C Positive Pressure fire rating, combining smoke and draft control with sound-rated performance for acoustic door systems. Engineered for demanding commercial door openings where code compliance, durability, and consistent sealing performance are essential.

Manufacturer Resources

Zero Full Line Catalog

Product Specs

Commercial/Residential:
Commercial
Product Group:
Door Trim and Accessories
Product Subgroup:
Astragals, Gaskets and Weatherstripping
Product Type:
Astragals
Department:
Door Hardware

Zero International 139AA36 – Frequently Asked Questions

1) What lengths does the Zero 139A astragal come in, and can I cut it down for a 7 foot door?
The 139A is stocked in 36 inch and 84 inch lengths, and it's meant to be cut to size in the field. For a standard 7 foot (84 inch) door leaf, take the 84 inch piece and trim to the actual measured height. The 36 inch piece is the one to grab for short openings or for patching a section.
2) Is the Zero 139A for a pair of doors or a single door?
Both. The 139A is a head and jamb meeting stile astragal for single active doors or for coordinating door pairs. On a pair it mounts to the inactive leaf and the neoprene seals against the active leaf at the meeting stile; on a single door it seals the strike jamb side.
3) What is the closest equivalent to the Zero International 139A meeting stile astragal from another manufacturer?
The NGP 139A is the nearest match by part identity and construction: it is a solid metal astragal of anodized aluminum. The Zero International 139A is an aluminum head and jamb meeting stile astragal carrying a closed cell sponge neoprene insert, so the Zero unit brings a compressible seal at the meeting stile while the NGP 139A is the solid metal profile. If the opening needs the gasket built into the astragal, stay with the 139A from Zero; if the detail calls for a bare anodized aluminum astragal, the NGP 139A covers it.
4) What should I use instead of a neoprene meeting stile astragal on a steel fire door pair that needs overlap coverage?
The NGP 139SP is a steel fire-rated door astragal with 3/4 inch overlap coverage, so it addresses the overlapping-leaf detail in steel rather than the aluminum-with-sponge-neoprene approach the Zero International 139A takes. The Zero 139A is fire rated to UL10C with Positive Pressure classification and seals with a closed cell sponge neoprene insert at the meeting stile. Choose by what the opening detail asks for: overlap in steel, or an aluminum astragal with an integral compressible seal.
5) Is a Trimco 5001 or 5002 lock astragal a substitute for the Zero 139A?
No. The Trimco 5001 is a stainless steel lock astragal for use with mortise or cylindrical locks, and the Trimco 5002 is a stainless steel lock astragal measuring 1-9/16 inches by 6 inches for use with cylindrical locks. Those are short lock-area pieces sized to the strike region of the door, not full-height sealing astragals. The Zero International 139A is a full-length aluminum meeting stile astragal with a closed cell sponge neoprene insert, supplied in 84 inch and 96 inch lengths and cut to size in the field. They solve different problems on the same pair of doors.
6) What astragal should I use if the door pair is out of alignment and a fixed neoprene seal will not stay in contact?
The Pemko 300 Series is an adjustable astragal with a self-adjusting pile brush for double doors, so the sealing element follows a leaf that does not close consistently. The Zero International 139A uses a fixed closed cell sponge neoprene insert against the meeting stile, which relies on the leaves meeting where the detail expects. For warped or hard-used pairs where contact varies, the adjustable pile brush design is the different approach on the shelf.
7) Does the Zero 139A astragal help with sound transfer between rooms?
It's sound rated, so it's usable on acoustic door systems where you need attenuation at the meeting stile. The closed cell sponge neoprene is what does the work: it compresses against the mating leaf and closes the air gap that carries most of the noise between a pair of doors. For an office or exam room where the door is otherwise gasketed but the meeting stile is left open, this is the piece that closes it.
8) Neoprene or brush astragal seal for a double door, which should I use?
A closed cell sponge neoprene insert like the one in the Zero 139A gives you a compression seal, which is what you want when smoke and draft control is the point, and it's what carries the UL10C Positive Pressure rating here. A pile brush astragal, such as the Pemko 300 Series self-adjusting brush type or the Pemko 369 split astragal with pile brush insert, is more forgiving of doors that don't hang perfectly in line, but brush is not a compression seal. If the opening is fire rated or acoustically rated, go neoprene.
9) I need an astragal that overlaps the gap between two doors, is the Zero 139A the right type?
The 139A is a meeting stile astragal with a sponge neoprene insert, sealing by compression at the stile rather than by lapping one leaf over the other. If the job calls for an overlapping profile that physically covers the gap, an overlapping astragal like the NGP 109N with neoprene seal or the NGP 176A is the type to specify, and the Cal-Royal EAST-501 is a T-astragal with vinyl insert built for double doors. Choose the overlap when you want a physical barrier over the gap and the compression seal when smoke, draft and sound control at the stile is the goal.
10) Can I use the Zero 139A astragal on a door with a mortise or cylindrical lock in the meeting stile?
The 139A is a full-height head and jamb astragal, so it runs the length of the stile and you'd be cutting around lock hardware. Where the point is to shield the lock and latch area specifically, a lock astragal is the purpose-built part: the Trimco 5001 in stainless steel is made for use with mortise or cylindrical locks, and the Trimco 5002 measures 1-9/16 x 6 inches for cylindrical locks. Those are short pieces at the lock, not a full-length seal.
11) I need a steel astragal instead of aluminum for a fire door, what are my options?
The Zero 139A is aluminum with a neoprene insert and carries a UL10C Positive Pressure fire rating, so aluminum is not a disqualifier on a fire opening. If the specification explicitly calls for steel, the NGP 139SP is a steel fire-rated door astragal with 3/4 inch overlap coverage. Match whichever the drawing calls out; substituting material on a fire-rated assembly is not a field decision.
12) Is there a smaller fire-rated astragal seal than the Zero 139A for a tight meeting stile?
The Pemko 369 is a split astragal seal with a pile brush insert, aluminum and fire-rated, at 13/32 inch by 11/32 inch. That is a compact split profile applied to both leaves, brush-sealed rather than neoprene-sealed. The Zero International 139A is a head and jamb meeting stile astragal in aluminum with a closed cell sponge neoprene insert, fire rated to UL10C with Positive Pressure classification and BHMA Certified. Where the stile leaves little room for a full astragal section, the split seal is the alternate detail.
13) Which astragal has a neoprene seal like the Zero 139A but in an overlapping profile for a door pair?
The NGP 109N is an overlapping astragal with a neoprene seal, supplied in an 84 inch length for commercial door weatherstripping. It keeps the neoprene sealing element but puts it on an overlapping profile that laps one leaf over the other, where the Zero International 139A is a head and jamb meeting stile astragal with a closed cell sponge neoprene insert for single active doors or coordinating pairs. Both come in 84 inch lengths.
14) What finish does the Zero 139A astragal come in?
Mill aluminum, the A suffix in the part number. It's an unfinished aluminum look, standard for commercial door and frame work where the astragal isn't a visual feature. If the opening is architectural and needs to match an anodized frame, an anodized aluminum astragal such as the NGP 139A or the NGP 176A is the direction to look.
15) Is the Zero 139A astragal rated for commercial use or is it a residential weatherstrip?
Strictly commercial. The 139A is built for commercial door openings, and it's the aluminum-and-neoprene construction plus UL10C and BHMA certification that puts it there. It's used on office buildings, schools, hospitals, retail, warehouse, multi-tenant residential and government facilities, so if you're standardizing gasketing across a portfolio of buildings this is a spec-grade item, not a hardware-store weatherstrip.
How fast can I get the Zero International 139AA36 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 Zero International 139AA36 come with a warranty?
Absolutely. The Zero International 139AA36 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 Zero International 139AA36?
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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