Double Wall Insulated Round Duct

Smc double wall round spiral duct is a dependable erosion resistant alternative to lined round spiral duct providing improved protection for insulation exposed to the airstream.

Double wall insulated round duct.

When a perforated inner liner is specified a retaining fabric must be wrapped between the perforated inner and the glass fiber insulation. Thermaduct s inspiral r and floval duct systems are preinsulated spiral and flat oval double wall ductwork alternatives that offer significant weight savings and near zero air leakage. It is shipped from the factory with the insulation pre installed reducing job site labor costs. It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications.

Dual wall also called double wall insulated spiral pipe dual wall insulated spiral pipe consists of two concentric spiral pipes with insulation filling the space between the pipes. This insulated duct provides excellent acoustical and thermal control with the efficient airflow performance of single wall round duct. Three standard types of double wall. Double wall duct and fittings will consist of a perforated or solid inner liner 1 thick x 1 0 lb ft layer of glass fiber insulation and a solid outer pressure shell.