How much window felt/mohair needed '65 Barracuda?

what you have linked to is what goes into the bottom piece in picture 1. I used self stick velcro, the softer side not the hooked side for my car since I wanted a stick synthetic in the wetter areas of my car(convertible). 2 5/8" is a little tight for my convertible rear guides and I went with 3" using a screen rubber roller for house screens /windows, couldn't find the old pizza roller/cutter.