This article originally appeared in the Spiral Duct Manufacturers Association insert in the January 2017 issue of SNIPS magazine. There are several factors that a designer should consider when ...

We have written before that round spiral duct should be your first choice for a rooftop HVAC duct system. The round shape reduces snow accumulation and accelerates rain runoff compared to rectangular ...

Sheet metal contractors, HVAC engineers, and others who need to quickly convert rectangular and flat oval duct dimensions to round, or rectangular to flat oval may want to take advantage of the ...

In industrial plants, ships, and buildings, a large amount of gas and air ducts are applied for equipment connection, HVAC, medium transport, and exhaust, etc. These ducts can be designed in varied ...