External Jacket/Cladding

An external jacket or cladding is a protective outer layer applied to duct sections in industrial ventilation and HVAC systems. It serves multiple functions including thermal insulation to maintain temperature control, mechanical protection against physical damage, corrosion resistance, and containment of internal insulation materials. Typically constructed from durable materials like aluminum, galvanized steel, or specialized polymers, it forms a sealed barrier that enhances system efficiency, safety, and longevity by preventing heat loss/gain, condensation, and environmental degradation.

The external jacket/cladding operates by creating a continuous protective barrier around duct sections. It minimizes heat transfer through thermal insulation properties, contains internal insulation materials, and provides structural integrity against external forces. By sealing the duct surface, it prevents moisture ingress, reduces condensation risks, and maintains consistent airflow temperatures. The cladding's reflective or insulating materials work to reflect radiant heat or slow conductive heat transfer, while its durable construction resists mechanical impacts, chemical exposure, and UV degradation in industrial environments.