I have a 20 year old wall oven (fisher & paykel). My wife dropped the bottom door to the lower oven and it shattered the glass fascia. My problem is that I can't find a product number on it and without that I can't order a replacement glass panel. Is there somewhere that I can look up to see if there is a picture of one so I can get a model number. It has been a great oven and I would like to keep it that way. Any ideas?