These TV's are old, extremely heavy, and are breaking down on people everywhere. They usually cost more to fix than they could be sold for, so people are begging you to come take them away for free! I usually find mine on the classified adds under the "free" section, but they are also common on the sides of streets and alleyways where people have left them for trash. PLEASE NOTE: These lenses are found in "rear-projection" televisions and not all are the same. Some are discolored, and some concentrate to a beam rather than a point. The particular screen I found was a crystal clear acrylic lens that focused to a point. It may have been luck that I found it on my first try, because 3 TV's after that all had lesser grade lenses, but still produced enough heat to melt zinc. Just FYI!