Extruding panel shapes in LunchBox

I am having a hard time extruding the triangles from LunchBox. It produces a lot of double lines. I guess I have to loft them together. I have no problem with the Tri Remesh triangles, but not working in Lunch Box.

Thanks in advance.
Fran
TOWERS.3dm (2.9 MB)
TOWERS.gh (20.9 KB)