Double Wall Insulated Round Duct

In double wall round spiral duct a metal inner liner insures that high airflow velocities cannot separate insulation by pulling away from the duct s outer wall and creating erosion or airflow problems.

Double wall insulated round duct.

Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated duct. 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. When a perforated inner liner is specified a retaining fabric must be wrapped between the perforated inner and the glass fiber insulation. It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications.

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 round duct mcgill airflow s double wall round duct is fabricated to exacting tolerances that make it easy to assemble and essentially leak free. Three standard types of double wall. This insulated duct provides excellent acoustical and thermal control with the efficient airflow performance of single wall round duct.