Duct Size Calculations

[uname2000]

This is a small software (vietnamese) for Duct Size Calculations.
You can try using it . Simply, you click start button-enter unit for air volume and.......
If you have any better software , could you give it to me ?
Thanks for using my soft and pls give me some comments.
Bye !
I forget to give user and password to you
here
u : vee
p: tienvy

lam vy,

I am Danh new to here. Would you give me more information of how to calculation the duct size please? Send me email at Danny.huu.tran@gmail.com.

Thanks