ThermaDuct is another variation of phenolic ductwork produced by Kingspan. This ductwork is primarily used in the outdoor HVAC system. It is the same phenolic ductwork as KoolDuct but has a vinyl clad exterior making it weatherproof. ThermaDuct again eliminates the need to hire an insulation contractor and offers a much cleaner, brighter, and more watertight installation. Morris Sheet Metal has installed plenty of this duct going up the sides of the building and across rooftops. Over the years it maintains a great look versus sheet metal which oxidizes and becomes an eyesore. ThermaDuct adapts easily to existing sheet metal ductwork so there is no reason to have brown rusty duct going up the side of your building or across your rooftop. Partner up with Morris Sheet Metal to swap that out!