Duct Fitting With Flange

[longnhietlanh996328]

Dear All
I have problem with duct transition connect by flange. When i set duct: center-midle, I draw duct it's ok but when i set top-left or another way, it have problem. The flange not change with new set. Do you have problem same me. How do you solve it?.
When we solve this problem, I think another fitting have no problem.

[tanphuc.dinh731523]

Hi there.
I'm Vietnamese too. I'm new in Revit MEP. I'm trying to design a ductwork system for a small contruction and i have the same problem as you posted. But baddly that i event can not create a flange that you did as your images you had attached. It doen't easly like to create an new AHU. The duct fitting consist of many fomular and reference that i can't understand . If you had success in create the flange for those duct fitting, please kindly to help me resolve this problem. This is my email ID: tanphuc.dinh@gmail.com . Thank you very much.