Fire-Rated, Zero-Clearance Vent Ducts

Article content provided by VaughanAir.

VaughanAir’s DuraDuct GNX and GNX-R6 are pre-manufactured, non-combustible duct systems engineered for critical fire safety in commercial and industrial buildings. Both systems utilize patented double-wall construction with integral insulation and are tested to ASTM E119 and CAN/ULC-S101 standards for two-hour fire resistance. They meet zero-clearance to combustibles, eliminating the need for added enclosures or fire wrapping.

Designed for streamlined installation, DuraDuct GNX features a 7/8" thick wall with an R-Value of 4.5, while the GNX-R6 increases insulation to an R-Value of 6 with a 1-5/8" wall, making it ideal for vertical risers or sub-ducts in shafts. Both products utilize flange-to-flange connections, which reduce field labor and simplify assembly.

Typical applications include smoke control systems, stair pressurization, and air supply/exhaust ducts through fire-rated walls and floors, and critical riser shafts where duct performance and fire resistance are essential. The GNX-R6 is especially suited for tall building risers requiring integrated sub-ducts and higher thermal performance.

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VaughanAir’s high-performance DuraDuct line features patented, prefabricated duct systems for both indoor and outdoor applications, offering unmatched safety, efficiency, and ease of installation. With lightweight, impact-resistant, and moisture-resistant double wall construction, these systems are ideal for kitchen exhausts, lab exhausts, robust enclosures, and providing exceptional fire protection and durability for critical installations.