Thermaduct provides high quality pre-insulated ductwork systems to both interior and exterior installations. Our family of pre-insulated products are designed and manufactured to increase the efficiency of the application with higher R-values and lower air leakage rates, while at the same time increase installation efficiency with lightweight duct systems that require no additional insulation or wrapping. Whether on the roof, or inside the building Thermaduct products offer excellent solutions for any application with insulated ductwork.