The DUCT BOARD TRI BOX is a prefabricated, insulated junction designed to split a main supply air duct into three branch lines with minimal installation time. Constructed from rigid fiberglass, it delivers superior thermal performance while preventing condensation buildup on ductwork. The integrated insulation layer reduces airflow noise, creating quieter operation throughout your system. Ideal for mini-split installations and retrofit applications where clean, efficient air distribution is essential. Simply connect your main supply line and branch outputs—no field fabrication required. A complete solution for professional HVAC installers seeking faster, more reliable duct transitions.
