Model-GRZ - DATA Sheet

Model GRZ has been tested in accordance with the procedures and methods as set forth by UL 2221 / ULC S144 (Tests for Fire Resistive Grease Duct Enclosure Assemblies) and UL 1978 / ULC S662 (Standard for Grease Ducts). Through penetration firestops have been tested in accordance with ASTM E814 and ULC S115. Model GRZ is classified for a maximum 2-hour fire resistance rating and may be installed at zero clearance to combustibles. This rating qualifies the insulation and outer shell wall as an alternate to a specified hourly rated fire resistive shaft enclosure. Model GRZ grease ducts are suitable for the removal of smoke and grease laden vapors from commercial, industrial, institutional, and similar cooking applications. This grease duct is suitable for interior and exterior installations.