Prefabricated grease duct systems are tested and listed under the Underwriters Laboratories UL-1978 listing and the UL-2221 classification for zero clearance to combustibles. Proper design… Read More »
Chimney systems serving high efficiency hot water heaters and boilers fall under the scope of Underwriters Laboratories UL-1738 listing. Proper design of these systems presents… Read More »
Free-standing stacks are highly engineered. Most projects require a complete structural analysis and review by a licensed structural professional. Contact us to design or review… Read More »
