
What Is Metal Ductwork? Rigid Sheet Metal vs. Flex Duct Explained
When Durability and Airflow Efficiency Matter Most If flexible ductwork is the workhorse of residential HVAC, metal ductwork is the gold standard. Rigid sheet metal ducts — fabricated from galvanized steel or aluminum — have been the basis of commercial HVAC systems for decades, and they remain the preferred choice in applications where airflow efficiency,


