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PEMKO BRAND
Since 1952, the Pemko name has been known as a key manufacturer in weatherstripping products. Over the years as an ASSA ABLOY Group brand, we have expanded our product line into a full line of architectural door accessory products to include thresholds, fire/smoke gaskets, door bottoms, perimeter gasketing, brush seals, astragals, continuous geared hinges, fire and life-safety products, lites and louvers, and sliding door hardware. The Pemko product line offers sound-tested, smoke-labeled, fire-labeled, skid resistant, and ADA-compliant products, and aggressively pursues new product development to create solutions for new applications and requirements.
PEMKO 355 T Overlaping Astragal
- When installing pairs of fire doors care must be taken to maintain the requirements of NFPA 80.
Ratings:
- Air Infiltration Tested
- Fire Rated - UL10C - Positive Pressure
- Underwriters Laboratory 4L10
Manufacturer Resources
Product Specs
- Features:
- When Installing Pairs of Fire Doors Care Must be Taken to Maintain the Requirements of NFPA 80
- Warranty:
- 5 Year
- Product Group:
- Door Trim and Accessories
- Product Subgroup:
- Astragals, Gaskets and Weatherstripping
- Product Type:
- Astragals
- Subcategory:
- Astragals
- Commercial/Residential:
- Commercial
- UL Listing Type:
- Air Infiltration Tested, Fire Rated- UL10C- Positive Pressure, Underwriters Laboratory 4L10
- Product Model:
- 355
- Product Dimension:
- W : 1-3/4", H: 1/8"
- Product Category:
- Door Trim and Accessories
- Product Substrate:
- Aluminum
Pemko 355CS84 – Frequently Asked Questions
1) What is the Pemko 355-T overlapping astragal used for?
The 355-T provides a weatherseal between double doors where one door overlaps the other. The silicone insert compresses against the inactive door leaf to block air, water, and light infiltration at the meeting stiles.
2) Which door gets the overlapping astragal?
Install the 355-T on the active door leaf that closes last. This door overlaps the inactive leaf, and the astragal's silicone insert seals against the face of the stationary door.
3) What door thicknesses work with this astragal?
The 355-T accommodates standard commercial door thicknesses. Verify your specific door thickness against the manufacturer's specifications. Most commercial hollow metal and wood doors are compatible.
4) What finishes are available for the Pemko 355-T?
Standard finishes include mill aluminum, dark bronze anodized, and black anodized. Custom painted finishes may be available for large orders. Match your door hardware finish for consistent appearance.
5) How does the silicone insert perform in weather exposure?
Silicone maintains flexibility in temperature extremes from -40°F to 400°F. It resists UV degradation, ozone, and moisture. The insert provides consistent sealing performance for exterior door applications.
6) Will this astragal meet building code requirements?
The 355-T helps meet air infiltration requirements when properly installed. Verify with your local code official that the astragal design is acceptable for your specific project and occupancy type.
7) What hardware comes with the astragal?
Standard packaging includes the aluminum extrusion with silicone insert and mounting screws. Check the specific length ordered to confirm included hardware. Some installations may require different fastener lengths.
8) How do you install the Pemko 355-T astragal?
Mount to the stile edge of the active door leaf using provided screws. Position so the silicone insert contacts the inactive door face when closed. Follow manufacturer's template for proper placement and fastener locations.
9) Can you adjust the seal compression after installation?
The seal compression is fixed by the astragal design and door gap. Proper initial positioning is critical. If adjustment is needed, relocate the entire astragal rather than trying to modify the silicone insert.
10) What other Pemko astragal options are available?
Pemko offers T-astragals, overlapping styles, and magnetic versions. Browse our Pemko products or weatherstripping section for alternate sealing solutions.
11) How long do silicone astragal inserts typically last?
Quality silicone inserts provide 15-20 years of service in most applications. Frequent door cycling and extreme weather exposure may reduce lifespan. Inspect annually for compression set or damage.
12) What door gap range does the 355-T accommodate?
The silicone insert design accommodates typical door gap variations. Consult the manufacturer's specifications for your exact gap requirements. Oversized gaps may require different astragal profiles or additional sealing methods.
How fast can I get the Pemko 355CS84 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 355CS84 come with a warranty?
Absolutely. The Pemko 355CS84 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 355CS84?
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 355CS84 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.