Double Wall Insulated Round Duct

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.

Double wall insulated round duct.

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. 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. 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. Three standard types of double wall.

Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated duct. When a perforated inner liner is specified a retaining fabric must be wrapped between the perforated inner and the glass fiber insulation. 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.