windscreen help ?

[Ricky]

hi thanks for the info i understand that the length depends on your scuttle but the top is not the same length so that gives it an angle its not exactly 90degrees or am i wrong but if it has an angle i would just like to know what it is does not need to be an exact one but one that i can work with and i just wanted to know what is that black strip that is between the scuttle and the frame of the windscreen would anybody know please if someone could tell what it is and whats it for that would be nice thanks alot everyone for the help with all the info its greatly appreciated :-)