Vertical louvers between facade curves

Hello friends,


I have some curved lines in Rhino that are actually facade


curves I have to put vertical louvers between them When I take them to Grasshopper and try to draw vertical lines between them with different methods, it doesn’t work I mean the lines rotate like the picture I put below. In Rhino, when I do this with the Array crv command and hit the No rotation option, it gives me perfectly vertical lines. If I want to extrude these lines in Rhino and make them cubic, what should I do? So that the axis of the cubes rotates in sync with the curved lines

pls post your gh definition with internalized geometry.