Can you expand on this? Or add a picture or two of what you have/looking for? Windows are not specific to a boat model - and in most cases, not specific even to a manufacturer. Knowing what you have will help.
Sounds like you might have a newish boat - could be worth a call to Grady, and see what they can tell you. The two Bomar hatches on my 330 were rescreened by a local glass shop for short money.