Joe
They are flat. Thanks for all of the information. That
surely give me more options.
Thanks again and good luck with the vipers
JR

Joe wrote:

Are they curved?

If not go with armored glass. If they have a curve then Lexan may be
the best bet. But expect to either polish them ever 10 years or live
with a not so clear view.

I have a forward hatch with armored glass about 22" round and it is as
clear as the day it was installed and it is 1976 vintage.

Joe