View Aquamatic on TEKEN44Double Wall Grease duct is ideal for use in kitchen ventilation applications where reduced clearance or zero-inch clearance to combustibles is needed. Grease duct is ETL listed to mastandard UL-1978 and UL Standard 2221 and rated for continuous operation at 500° F and intermittent operation at 2000°F. Inner duct diameters range from 5" to 36", with multiple lengths and accessories available
ANSI/ASTM E814
Test Method for Fire Tests of Penetration Firestop Systems
ANSI/UL 1978
Standard for Grease Ducts
ASTM E814
Standard Test Method for Fire Tests of Penetration Firestop Systems
UL 2221
Standard for Tests of Fire Resistive Grease Duct Enclosure Assemblies
ULC 144
STANDARD METHOD OF FIRE RESISTANCE TEST - GREASE DUCT ASSEMBLIES
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