Rectangular Factory-Built Grease Duct
Prefabricated rectangular UL 1978 / UL 2221 grease duct from Van-Packer and Vaughan Air, single-wall and zero-clearance double-wall.
Overview
Premium, prefabricated rectangular grease duct systems engineered for high-capacity commercial kitchen ventilation. Certified to UL 1978 and the UL 2221 2-hour fire-resistance standard. Single-wall (Model SED) and space-saving double-wall fiber-insulated (Model KEX) configurations use a slim 3.25-inch clearance profile. Zero-clearance models provide a fully integrated, code-compliant 2-hour fire-rated enclosure, eliminating the labor and footprint of a field-constructed drywall or masonry shaft. Precision modular bolt-together flanged connections replace field welding and shorten install time while delivering a fully listed, factory-warrantied system.
Featured Models · Manufacturers
Listings · UL 1978 · UL 2221 · ASTM E2336 · NFPA 96
Specification Highlights
What this system delivers.
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Multi-Manufacturer Options
Market-leading technical solutions from Van-Packer and Vaughan Air.
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Advanced Fire Certification
Fully listed to UL 2221 for integrated 2-hour fire-resistance and ASTM E2336 compliance.
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Footprint Optimization
Double-wall structural profile extends only 3.25 in. from the inner liner, maximizing tight mechanical plenum space.
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Fast, Field-Friendly Assembly
Modular bolt-together flanged joints replace field welding to compress install schedules.
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