PP Flame Retardant Duct vs. PVC Duct vs. Metal Duct: Which Is Best for Fire-Rated HVAC Systems?
Selecting the right duct material for fire-rated HVAC systems is one of the most consequential decisions engineers and procurement managers face in commercial and industrial construction. A single wrong choice can lead to code violations, costly retrofits, or catastrophic fire safety failures. Among the leading contenders — PP flame retardant duct, PVC duct, and metal…
