Polypropylene (PP) Air Duct: The Complete Guide
A polypropylene (PP) air duct is a rigid thermoplastic ductwork system that carries corrosive gases, fumes, and moisture-laden air in industrial exhaust systems. This guide explains what PP duct is, how it compares with PVC and galvanized steel, what sizes and temperatures to specify, and the quality evidence to check in a supplier.

