For these cases the inner liner does not project beyond the outer shell x 0 inches and a slip fit.
Double wall spiral duct dimensions.
Duct direct 8610 wallisville rd.
Dual wall duct is also available in 2 3 and 4 thickness.
Roll formed continuous interlocked pipe.
1 2 and 3 insulation thicknesses are available.
Dual wall duct sizes are listed using the inside diameter.
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.
K value is 0 27.
Air distribution corporation spiral duct and fittings are manufactured in accordance with applicable smacna ashrae and spida standards.
Gauge schedule size dia.
It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications.
Flame spread 25 and smoke developed 50.
Spiral double wall duct size pipe outer wall size inner wall positive pressure to 10 w g.
Fittings 3 12 26 14 24 24 26 36 22 38 48 20.
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.
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.
Surface burning characteristics are.
Mylar barrier is available as a barrier between perforated liner and insulation.
Ft f at 75.
This insulation has thermal conductivity of 0 26 btu in hr.
713 672 0509 toll free 877 774 duct 3828.
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.
Houston texas 77029 phone.
Dual wall double wall insulated spiral is available with solid or perforated liners.
Biyang double wall spiral duct is made of big spiral duct outside insulation in the middle and small spiral duct inside.
Wonderflanges can be used on 1 2 3 or 4 double wall spiral pipe and fittings.
Mild steel is the standard material.
E z flange with barrel clamp 26 to 96 diameter.
