Another thing I didn't mention, is that the end with the plastic part in it goes on the bottom, which seems different from your Series 770.
Thanks
What is the bottom you're referring to? The bottom of the sash, or some other part? I will need to see pictures of where the plastic clip inserts.
Thank you.
Next question: Do you have these in different lengths?
We are doing these for a school, and some of the windows are larger. We'll have to go back and measure them all, as we were just waiting to see if your S770 was compatible.
(Yes, one of them it is the vinyl that is broken. We have already replace the insulated units they had broken in several windows. They will have to just keep that one closed.)
Thanks,3-In-1 Glass