Cut a Void through Louvre Array

[russell.erocido]

I'm trying to cut a void through an array. Attached revit file will show everything better than I can explain. Face based void doesn't seem to work because the array are generic models in an angle relative to the vertical face and I need the void to be on the vertical plane (image attached) 

[ToanDN]

Create it as a curtain wall with only horizontal mullions as louver blades, the edit profile to get it to round shape or any shape you want.

[barthbradley]

You should be able to. Post your Family here and let's see what's going on.