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.
Double wall spiral duct dimensions.
Wonder flange rings are fused together at the factory and arrive at the jobsite ready for mounting.
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.
1 2 and 3 insulation thicknesses are available.
E z flange with barrel clamp 26 to 96 diameter.
Wonderflanges can be used on 1 2 3 or 4 double wall spiral pipe and fittings.
K value is 0 27.
Dual wall duct is also available in 2 3 and 4 thickness.
Houston texas 77029 phone.
Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated duct.
Surface burning characteristics are.
Ft f at 75.
The outer wall performs as the pressure shell and will be constructed and sealed for the appropriate pressure class.
Paint grip minimum gauges for spiral pipe construction.
Dual wall duct sizes are listed using the inside diameter.
Fittings 3 12 26 14 24 24 26 36 22 38 48 20.
Gauge schedule size dia.
713 672 0509 toll free 877 774 duct 3828.
Air distribution corporation spiral duct and fittings are manufactured in accordance with applicable smacna ashrae and spida standards.
Flame spread 25 and smoke developed 50.
Mild steel is the standard material.
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.
It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications.
For these cases the inner liner does not project beyond the outer shell x 0 inches and a slip fit.
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Spiral double wall duct size pipe outer wall size inner wall positive pressure to 10 w g.
Galvanized and ss are available.
Dual wall double wall insulated spiral is available with solid or perforated liners.
Roll formed continuous interlocked pipe.
Mylar barrier is available as a barrier between perforated liner and insulation.