Cull index grasshopper

Hello im trying to make the ribbon-like linear louver in grasshopper
I would like to remove the surfaces(e.g. no.100-199) which were made by quad panels
i can only remove specific number. i dont know how to remove.
does anyone know how to do that?

Best, Keisuke

test ribbon.gh (458.4 KB)

Is this what you are looking for here?

1 Like

thank you Mike
This is what i want to know!

Best, Keisuke