Description: The Eastern Sheet Metal Equivalent Round Duct Calculator app allows sheet metal contractors, installers, HVAC engineers, and contractors to quickly convert rectangular and flat oval duct ...
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 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results