Round Air Duct Sizing Based on Velocity Reduction Method

In this video You will learn sizing Round duct by using velocity reduction method Based on Recommended and Maximum Velocities for Residences.
velocity reduction method is method which is used for sizing air ducts, by using this method is going to allow us to Select suitable velocities for sizing ductwork.

[@RemeoBerkam]

Less view bro because you are not direct and clear
Courage too