I live in construction that is 2 1/2 years old. The builder installed
windows that had a gray "General Contractor" sticker on it. Last year
one of the windows fogged and I was able to get the builder to replace
the sash. I ahve noticed another has fogged and also one of the small
windows by the door (I think it is called a 'light') has fogged too. I
cannot find my builder anymore and these windows have no obvious
indication of the OEM?

Can anyone advise on either who the OEM is and what if any recourse I
have?