CS (CM) & CS Plus – Special Gas Venting CS & CS are UL 1738 tested & listed venting systems for categories, II, III, IV or in Canada type BH gas vent. Our CS model is used with appliances burning…

ETL Listed to UL 2221 / ULC S144 – Zero Clearance Round and Rectangular Grease Duct Per NFPA 96, Chapter 4, Section 4.3.3.1: “Factory-built grease duct protection system shall be listed in accordance with UL 2221” Rectangular Round UL 1978…