Thanks Chip for the reply. My truck had no glass when I bought it so I couldn't measure the amount of glass sticking out each end of the channel. I did get the glass installed on the passenger side but the window wants to bind up when rolling it down. The glass I had for the driver side was a little large and wouldn't fit inside the fuzzy. I sanded it down with a belt sander and after several attempts to make it fit, the glass shattered into a thousand pieces. It was everywhere. Now I need to buy another glass and try again. I hate to take out the passenger side one again but it binds and doesn't fit all that well either. Oh well.........