Divide length and paneling

Yes. However… I still can’t open your R6 .3dm file in R5 and you didn’t internalize your geometry so again, I can’t use your geometry:

More importantly though, with curved edges on your “panels” (louvers?) this gets complicated and has been done many times before:

https://discourse.mcneel.com/search?q=louver

P.S. No internalized geometry in that thread so useless… Try this one instead: