Duct Sizer Lite 3.0.1 is a light weight Ductulator for GSS Duct sizing. This is a limited version where in aiflow can be entered upto 999cmh and velocity form 0.1 to 9 m/s
This program will give the hydraulic round diameter of a duct and the friction rate.
You can then calculate the duct height knowing the width...
Please watch out for PRO version which shall cover a bigger range with more features. This PRO version shall be chargeable.
Pro Version different from this version is released https://play.google.com/store/apps/details?id=com.rioCADDSys.ductbackcalc ..