Pemko 303 Fire-Rated Perimeter...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$146.66
Pemko Pemko 303 36" x 84" Standard Perimeter Gasketing with Insert PMK-303

Pemko 303 Fire-Rated Perimeter Gasketing with Silicone Insert - 1-1/8" x 1/4" Aluminum

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Model: 303APK 36X84

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

$146.66
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Pemko 303 Fire-Rated Perimeter Gasketing with Silicone Insert - 1-1/8"; x 1/4"; Aluminum

Professional Fire-Rated Door Sealing Solution

The Pemko 303 Standard Perimeter Gasketing provides Category J gasket performance for listed steel frames and classified doors with fire ratings up to 3 hours for steel doors, 1-1/2 hours for wood and plastic covered composite doors, and 20 minutes for wood core doors. This rigid jamb weatherstrip features 1-1/8"; x 1/4"; aluminum construction with silicone insert and can seal gaps up to the depth of its seal from standard 1/16"; openings. UL10C Positive Pressure fire rated and GREENGUARD Gold certified for superior performance and environmental safety.

Professional Features & Benefits

  • Precision Dimensions: 1-1/8"; height x 1/4"; width aluminum profile designed for standard 1/16"; gaps with sealing capability up to full seal depth.
  • Multi-Hour Fire Rating: UL10C Positive Pressure fire rated for steel doors up to 3 hours, composite doors up to 1-1/2 hours, and wood core doors for 20 minutes.
  • Durable Aluminum Construction: Rigid aluminum substrate with silicone insert provides long-lasting performance and weather resistance.
  • Comprehensive Testing Certifications: Air infiltration tested, sound tested per ASTM E90, smoke tested UL1784, and BHMA certified for professional applications.
  • Flexible Gap Sealing: Each weatherstrip can accommodate gaps up to the depth of its seal, providing versatile installation options.
  • Environmental Certification: GREENGUARD Gold certified for low chemical emissions and indoor air quality.
  • Premium Fastening System: Supplied with stainless steel fasteners as standard with alternative fastener options available.
  • Manufacturer Warranty: 5 Year warranty coverage for added confidence and protection.

Technical Specifications

  • ANSI/BHMA: Air Infiltration Tested, Sound Tested ASTM E90, BHMA Certified, Smoke Tested UL1784, Fire Rated UL10C Positive Pressure, cUL Listed 4L10, GREENGUARD Gold Certified
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Product Category: Door Trim and Accessories
  • Product Dimension: W: 1/4";, H: 1-1/8";
  • Product Group: Door Trim and Accessories
  • Product Model: 303
  • Product Subgroup: Astragals, Gaskets and Weatherstripping
  • Product Substrate: Aluminum
  • Product Type: Gaskets
  • Subcategory: Gaskets & Weatherstripping
  • Warranty: 5 Year

Professional Applications

  • Fire-Rated Commercial Door Systems
  • Healthcare Facility Fire Barriers
  • Educational Institution Safety Compliance
  • Industrial Fire Separation Requirements
  • Multi-Tenant Residential Fire Doors
  • Government and Municipal Building Safety
  • High-Rise Building Fire Protection Systems

Why Choose Pemko Quality?

Pemko perimeter gasketing delivers professional-grade fire protection with comprehensive UL10C Positive Pressure fire rating and multi-hour performance capabilities for demanding commercial applications. GREENGUARD Gold certification and 5 Year warranty demonstrate the company's commitment to environmental responsibility and long-term reliability. Engineered for critical fire and life-safety applications where dependable sealing performance is essential for code compliance and occupant protection.

Product Specs

Warranty:
5 Year
Subcategory:
Gaskets & Weatherstripping
Product Group:
Door Trim and Accessories
Product Subgroup:
Astragals, Gaskets and Weatherstripping
Product Type:
Gaskets
ANSI/BHMA:
Air Infiltration Tested, Sound Tested ASTM E90, BHMA Certified, Smoke Tested UL1784, Fire Rated UL10C Positive Pressure, cUL Listed 4L10, GREENGUARD Gold Certified
Commercial/Residential:
Commercial
Product Model:
303
Product Dimension:
W: 1/4", H: 1-1/8"
Product Category:
Door Trim and Accessories
Product Substrate:
Aluminum
Department:
Door Hardware

Pemko 303APK 36X84 – Frequently Asked Questions

1) What is the Pemko 303 perimeter gasketing used for?
The Pemko 303 provides perimeter sealing around door frames to block air, light, sound, and moisture. It installs in a continuous groove around the door frame perimeter for comprehensive weatherproofing.
2) What door types is this gasketing compatible with?
The 303 works with most standard commercial and residential doors including wood, metal, and composite doors. It requires a routed groove in the door frame for proper installation. Verify door clearances before ordering.
3) Can this gasket handle both inswing and outswing doors?
Yes, the Pemko 303 works with both inswing and outswing door configurations. The gasket compresses against the door surface regardless of swing direction when properly installed in the frame groove.
4) What finishes are available for the Pemko 303?
The 303 gasket comes in various configurations with different insert materials and housing finishes. Common options include clear and black gasket materials. Verify the specific finish option when ordering for your project.
5) What is the temperature rating for this gasketing?
Pemko perimeter gasketing typically handles standard building temperature ranges. For extreme temperature applications or specific performance requirements, verify the gasket material specifications with the manufacturer data.
6) Does this gasketing meet building code requirements?
The Pemko 303 can contribute to door assembly performance for air infiltration and energy codes. Check local building codes and project specifications for required performance levels. Some applications may require tested door assemblies.
7) What accessories are needed for installation?
Installation requires a router to cut the perimeter groove in the door frame. The gasket typically includes the insert and housing. Corner mitering tools help achieve clean corner joints for professional appearance.
8) How do you install perimeter gasketing in the door frame?
Route a continuous groove around the door frame perimeter to the gasket specifications. Cut the gasket to length, miter corners, and press into the groove. Ensure proper compression against the closed door without binding.
9) How often should perimeter gasketing be replaced?
Replace gasketing when it shows permanent compression, cracking, or seal failure. High-traffic doors may need replacement every 5-10 years. Inspect annually for proper compression and sealing performance.
10) Are there similar Pemko gasketing options available?
Pemko offers various perimeter gasketing profiles including different insert materials and housing designs. Browse our Pemko selection for alternative gasket profiles that may suit your specific sealing requirements.
11) What groove dimensions does the Pemko 303 require?
The 303 requires specific groove width and depth dimensions for proper fit and performance. Check the manufacturer template for exact routing dimensions before cutting the frame groove. Incorrect groove size affects sealing performance.
How fast can I get the Pemko 303APK 36X84 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 303APK 36X84 come with a warranty?
Absolutely. The Pemko 303APK 36X84 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 303APK 36X84?
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 303APK 36X84 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.
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