Corrugated  spiral pipe

Round duct shaped by an helicoidal galvanized strip, with two veins reinforcing the center, which gives greater rigidity to the duct.

specs corrugated spiral duct.png

*Galvanized steel finish. 

*Nones diameters available 9,11,13,15,17 and 19".

*Available with internal insulation DuctLiner 1" thick and other.

* Union by couplings, clamps  or flanges.

Advantages: allows to use thinner gauges than in flat spiral duct for the same diameter, this being a cheaper option in some cases.