Security/Duravent: DuraVent FasNSeal


DuraVent FasNSeal

Product Details

Size Range

3 - 16 Inches

DuraVent FasNSeal® Venting Systems

Safe. Durable. Engineered for Performance.

Raven Supply is proud to carry DuraVent’s FasNSeal® line of venting systems, designed for commercial and industrial appliances with positive, condensing, or Category II, III, and IV gas-fired systems. Built from superior AL29-4C® stainless steel, FasNSeal products provide maximum corrosion resistance, ensuring long-lasting performance in even the harshest environments.

The FasNSeal family offers venting solutions for a wide range of high-efficiency appliances—including boilers, water heaters, and warm air furnaces—where traditional venting materials cannot withstand the acidic flue condensate. With easy-to-install designs and precision engineering, these systems deliver safe, efficient venting while reducing installation time and maintenance requirements.

Key Features

  • AL29-4C® Stainless Steel Construction for superior corrosion resistance
  • Designed for Category II, III, and IV gas-fired appliances
  • Tested and listed to UL 1738 / ULC S636 for positive pressure and condensing systems
  • Double-wall and single-wall options available for installation flexibility
  • Modular, easy-to-install design with secure gasketed connections
  • Ideal for boilers, water heaters, and commercial heating systems

Why FasNSeal®?

With a proven track record across North America, FasNSeal® venting systems are trusted by engineers, contractors, and facility operators for projects requiring reliability, safety, and long-term durability. Whether you’re upgrading an existing system or installing new high-efficiency appliances, FasNSeal offers the peace of mind that comes with industry-leading design and performance.

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