Pemko 297AS Split Astragal wit...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$491.95
Pemko 297AS Split Astragal - Gasketing, Bulb Type - Silicone

Pemko 297AS Split Astragal with Silicone Bulb Gasketing 72" x 84" Mill Finish Aluminum

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Model: 297DS 72X84
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$491.95
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Pemko 297AS Split Astragal with Silicone Bulb Gasketing 72"; x 84"; Mill Finish Aluminum

Professional Astragal and Perimeter Gasketing Solution

The Pemko 297AS Split Astragal provides effective weathersealing for double door applications with silicone bulb-type gasketing. This 72"; wide by 84"; long astragal features mill finish aluminum construction and can seal gaps up to the depth of its seal profile. Punched on 6"; centers with slotted holes for precise adjustment, this weatherstrip accommodates openings with 1/16"; gaps while providing flexible sealing capability.

Professional Features & Benefits

  • Optimal Door Coverage: 72"; width by 84"; length provides complete coverage for standard double door openings in commercial applications.
  • Silicone Bulb Gasketing: Durable silicone insert material delivers long-lasting weathersealing performance and flexibility across temperature ranges.
  • Adjustable Mounting System: Punched on 6"; centers with slotted holes allows precise positioning and alignment for optimal seal contact.
  • Mill Finish Aluminum Construction: Lightweight yet durable aluminum substrate provides corrosion resistance and professional appearance.
  • Flexible Gap Sealing: Accommodates openings with 1/16"; gaps while sealing effectively up to the full depth of the seal profile.
  • Fire and Smoke Rated: UL 10C fire rated and UL 1784 smoke tested for code compliance in commercial applications.
  • Environmental Certification: GREENGUARD Gold Certified for low chemical emissions in indoor environments.
  • Manufacturer Warranty: 5 Year warranty coverage for added confidence and protection.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Insert Type: SiliconeSeal
  • Product Category: Door Trim and Accessories
  • Product Dimension: H: 1/4", W: 72";
  • Product Group: Door Trim and Accessories
  • Product Length: 84";
  • Product Model: 297
  • Product Subgroup: Door Bottom Sweeps and Door Shoes
  • Product Substrate: Aluminum
  • Product Type: Door Sweeps and Bottoms
  • Subcategory: Door Sweeps
  • UL Listing Type: Smoke Tested - UL1784, Fire Rated - UL10C, Underwriters Laboratory 4L10, GREENGUARD Gold Certified
  • Warranty: 5 Year

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 Pemko Quality?

Pemko astragal and weathersealing products deliver professional-grade reliability with mill finish aluminum construction and silicone gasketing rated for demanding commercial applications. UL 10C fire rated and UL 1784 smoke tested with GREENGUARD Gold certification for indoor air quality compliance. 5 Year warranty coverage ensures long-term performance where dependable weathersealing is essential.

Product Specs

Insert Type:
SiliconeSeal
Warranty:
5 Year
Subcategory:
Astragals
Product Group:
Door Trim and Accessories
Product Subgroup:
Astragals, Gaskets and Weatherstripping
Product Type:
Astragals
Commercial/Residential:
Commercial
UL Listing Type:
Smoke Tested - UL1784, Fire Rated - UL10C, Underwriters Laboratory 4L10, GREENGUARD Gold Certified
Product Model:
297
Product Length:
84"
Product Dimension:
H: 1/4", W: 72"
Product Substrate:
Aluminum
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Pemko 297DS 72X84 – Frequently Asked Questions

1) Will the Pemko 297AS split astragal work on a fire rated pair of doors?
Yes. The 297AS carries a UL 10C fire rating and is smoke tested to UL 1784, so it can be used on rated door assemblies in commercial buildings. It's also GREENGUARD Gold certified, which matters on schools and healthcare projects with indoor air quality requirements.
2) What is a split astragal and when do I use one instead of an overlapping astragal?
A split astragal mounts on both leaves of a pair, with each half meeting the other at the meeting stile. The Pemko 297AS does this with a silicone bulb seal, so both doors stay independently operable, which is what you want when both leaves are active. An overlapping astragal like the NGP 176A or NGP 109N mounts on one leaf and laps over the other, which forces a sequence of operation and normally makes that leaf the inactive one. Pick the overlapping type when you have a clear active/inactive pair and want a physical lap over the gap.
3) My double doors have a gap at the meeting stile. Will this astragal seal it?
The 297AS is set up for openings with about a 1/16 inch gap and seals up to the full depth of its seal profile. If your meeting stile gap is much wider than that, or the leaves are out of plane, you'll want a solid overlapping astragal that physically covers the joint instead, such as the NGP 139SP steel astragal with 3/4 inch overlap coverage.
4) What is the closest equivalent to the Pemko 297AS split astragal if I need an 84 inch overlapping astragal instead?
The NGP 176A is an overlapping astragal in anodized aluminum offered in an 84 inch length, which matches the 84 inch length of the Pemko 297AS. The difference is in profile type: the 297AS is a split astragal, meaning a piece mounts on each leaf of the pair, while the 176A is an overlapping design where one leaf carries a lip that covers the meeting stile. The 297AS carries silicone bulb gasketing as its seal material.
5) Is a Trimco 5001 lock astragal a substitute for the Pemko 297AS?
No - they do different jobs. The Trimco 5001 is a stainless steel lock astragal used with mortise or cylindrical locks, a short piece that protects the latch area of the meeting stile. The Pemko 297AS is a full 84 inch aluminum split astragal with silicone bulb gasketing that weatherseals the entire height of a double door meeting stile. If you need continuous perimeter sealing, the 5001 will not do it; if you only need to cover the latch, the 5001 is the shorter piece. Trimco also offers the 5002 lock astragal at 1-9/16 inch by 6 inch for cylindrical locks.
6) What astragal should I use if I want a solid metal astragal with no gasket on a fire rated pair?
The NGP 139SP is a steel fire rated door astragal with 3/4 inch overlap coverage, and the NGP 139A is a solid metal astragal in anodized aluminum construction. Both are bare metal profiles without a compressible insert. The Pemko 297AS takes the other approach: an aluminum split astragal with a silicone bulb seal, UL 10C fire rated and UL 1784 smoke tested.
7) How does the Pemko 297AS mount, and can I adjust it after it's up?
It's punched on 6 inch centers with slotted holes, so you can shift it in or out slightly to set seal contact against the opposite leaf after the screws are started. That adjustment is the difference between a bulb that compresses properly and one that either drags or leaves a light gap.
8) Will a silicone bulb astragal hold up in an exterior entrance with wide temperature swings?
Silicone is the reason to choose the 297AS over a vinyl insert. It stays flexible at low temperature and doesn't take a set the way vinyl does after repeated compression. The carrier is aluminum, so it won't rust. By contrast, the Cal-Royal EAST-501 T-astragal uses a vinyl insert, which is a lower-cost route better suited to interior or protected openings.
9) Can I use this astragal on a pair where the lock is mounted in the meeting stile?
A split bulb astragal seals the gap between leaves, so it doesn't provide a protective plate around lock hardware at the meeting stile. If what you actually need is a lock astragal to cover the strike area, look at the Trimco 5001 stainless lock astragal for mortise or cylindrical locks, or the Trimco 5002 at 1-9/16 by 6 inches for cylindrical locks. Those are a different part doing a different job from perimeter weathersealing.
10) I need an astragal with a neoprene seal rather than silicone - what should I order?
The NGP 109N is an overlapping astragal with a neoprene seal, offered in an 84 inch length for commercial doors. The Pemko 297AS uses a silicone seal insert in a bulb profile instead. Both cover an 84 inch door height, so the choice comes down to seal material and whether you want a split astragal on both leaves or an overlapping astragal on one.
11) What finishes does the Pemko 297AS astragal come in?
Two: mill finish aluminum and dark bronze anodized aluminum. Mill is the usual pick where the astragal sits behind or is painted to match; dark bronze anodized is the one to order when it has to blend with bronze storefront or existing dark anodized entrances across a property.
12) Is the Pemko 297AS suitable for a commercial building or is it a residential product?
It's specified as a commercial product, aluminum carrier with a silicone seal, and it's used on office buildings, schools, hospitals, retail, warehouses, multi-tenant residential and municipal work. For light residential double doors it's more astragal than most openings need.
How fast can I get the Pemko 297DS 72X84 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 Pemko 297DS 72X84 come with a warranty?
Absolutely. The Pemko 297DS 72X84 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 Pemko 297DS 72X84?
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 Pemko 297DS 72X84 from ZenSupply?
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