CaptiveAire's factory built, listed single wall grease ductwork is ideal for use in applications where clearance to combustibles and temperature retention are not significant factors.. The listed pollution control unit is suitable for use in commercial cooking installations for the removal of smoke and grease laden vapors. Grease duct installations require provisions for cleaning the interior of the duct. NFPA 96 cleanout requirements are as follows: 1.
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3.2 APPLICATION Suitable for use in commercial cooking installations for the removal of smoke and grease-laden vapors. Grease duct systems being used in caustic environments including coastal applications, must be constructed of .036" 444 stainless steel.. CaptiveAire's single wall & double wall grease duct are factory-welded for ease of installation and superior performance to traditional site-welded ductwork. Single wall grease duct is ETL Listed to UL Standard 1978 - Grease Ducts and CAN/ULC-S662.