We are new owners of house which was built in 2002 and has vinyl windows. These windows need replacement glass, trim, screens and etc. The windows have no mfg data to determine where to go for repair parts. Since the windows are only 7 years old I want to repair and not replace them. I have not found a supplier of generic vinyl repair parts. And inquires have resulted in offers to replace the windows. These offers are for retro fit install which leaves the old window frame installed. Where to find parts and instructions on how to do the repair is my question.