BIMobject is free. You just have to signup. I assume you are a student. There is no difference how to draw panel in Revit. Beside it is the material and fill pattern you need to add to get the polycarbonate panel look. As well if someone tell you the representation is wrong, then whoever inform you must give you a sample. Majority of the time manufacturer representation show you how it will be constructed in reality. So I don't get why anyone will say it is wrong when it will be manufacturer that dictate the maximum size of their support spacing.
Check out my Revit youtube channel - https://www.youtube.com/user/scourdx
