- ETL Listed to UL Standard 1978 and UL Standard 2221- Grease Duct Enclosure Assemblies
- Ideal for use in kitchen ventilation applications where reduced clearance or zero-inch clearance to combustibles is needed
- Duct sections are constructed of an inner wall and outer wall with insulation in between – inner duct is Single Wall (DW Series) and outer shell is Stainless steel
- Inner duct diameters range from 8″ to 24″
- Three models are available to meet clearance requirement needs – Model DW-2R, Model DW-3R and Model DW-3Z
- Rated for continuous operation at 500 degrees F and intermittent operation at 2000 degrees F
- Model 3Z is listed in accordance with Condition A and Condition B of UL Standard 2221 – Condition A represents all installation conditions except for installation within non-ventilated combustible enclosure. Condition B represents installation within a non-ventilated combustible structure
- Models 2R and 3R are listed in accordance with Condition B of UL Standard 2221 – installation within non-ventilated combustible enclosure
Duct systems are allowed to penetrate a fire resistance rated floor when using floor support assembly and fire stop kit
