Why is all the glass i get for my 1969 firebird has stripes in it?

[Wesley K]

First i bought tinted glass and put it all in and it had a rainbow effect... so ordered new glass... not tinted... and it has the same thing. has anyone else ran across this problem? what other options do i have?

 

[Goatman]

It is the way the Glass is made it was shaded with gradiant glass shading and would be correct for the year you have, it is not that noticible when installed in the car and should be fine for a daily driver or a judged show car ..