A delivery truck pulled into the yard and heavy sighs arose from the installers who went to meet it. It was another load of ductwork, and everybody knew what to expect: lightweight flanges that ...

In 1948, research by R.G. Huebscher established flow resistance for different shapes of ductwork at equal velocities, which allowed the creation of the duct-sizing calculator or “Ductulator” for ...

Although "pop-up" hood scoops are by far the most popular plan for air grabbing, these alternate ducting arrangements offer additional low-profile advantages. Available from either hardware or ...