Flexible ductwork is constructed from a combination of materials designed for durability and thermal efficiency. At its core, it features:

– A steel-string wire coil

– Covered with bendable, durable polymer plastic

– Insulated typically with fiberglass

– And protected by a thin layer of polyethylene or foil jacket

Additionally, depending on the particular application, materials like PVC, rubber, silicone, stainless steel, galvanized steel, or aluminum may be utilized. These materials help to increase the ductwork’s resilience to movement, high temperatures, abrasion, and UV exposure.