I wrote a blog a while back about how faulty door gaskets, such as a Door Gasket for a T-49, can lead to foggy glass doors on Glass Door Merchandisers, like the GDM-49. After discussing this more with a refrigerator sales guy, I realized that my post is only half true. There are many things that can cause a glass door to fog up. Yes, one is a faulty door gasket, but there are other causes. So, please consider this a brief correction to my earlier post. If your glass door fridge fogs up, you may need a Door Gasket, or you may need a number of other parts, call someone that knows what they are doing.