Double Wall Spiral Duct Dimensions

Wonder flange rings are fused together at the factory and arrive at the jobsite ready for mounting.

Double wall spiral duct dimensions.

Ft f at 75. Spiral pipe 3 16 26 18 26 24 28 40 22 42 50 20 52 84 18 gauge schedule size dia. Uni gasket fittings are compatible and available with all of mcgill airflow s round double wall duct types in 1 inch increments for 5 through 12 inch diameters outer shells and in 2 inch increments in 14 through 24 inch outer shell diameters. X 2 inches for inner liner minor axis dimensions greater than 7 inches double wall duct and fittings can be ordered with van stone or applied connectors installed on the outer shell.

K value is 0 27. The outer wall performs as the pressure shell and will be constructed and sealed for the appropriate pressure class. Flame spread 25 and smoke developed 50. Surface burning characteristics are.

Fittings 3 12 26 14 24 24 26 36 22 38 48 20. Galvanized and ss are available. Mylar barrier is available as a barrier between perforated liner and insulation. Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated duct.

Spiral double wall duct size pipe outer wall size inner wall positive pressure to 10 w g. Dual wall double wall insulated spiral is available with solid or perforated liners. Dual wall duct sizes are listed using the inside diameter. Wonderflanges can be used on 1 2 3 or 4 double wall spiral pipe and fittings.

For these cases the inner liner does not project beyond the outer shell x 0 inches and a slip fit. This insulation has thermal conductivity of 0 26 btu in hr. 713 672 0509 toll free 877 774 duct 3828. Gauge schedule size dia.

Duct direct 8610 wallisville rd. 1 2 and 3 insulation thicknesses are available. Air distribution corporation spiral duct and fittings are manufactured in accordance with applicable smacna ashrae and spida standards. Roll formed continuous interlocked pipe.

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. Biyang double wall spiral duct is made of big spiral duct outside insulation in the middle and small spiral duct inside. Dual wall duct is also available in 2 3 and 4 thickness. It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications.

Mild steel is the standard material.