Originally Posted by SilverHoot
See for yourself the difference. One size does not fit all. VTS sells two different clips one for 1/8" thick windows and one for 3/32" thick windows. If your windows are original then they 3/32". The clip on the right is what I bought first from another source and was not a good fit for either window thickness. Very happy with the VTS clips.
Squeezing the clip makes it fit just the window glass.
Or, later on, you can add the metal edging if you wish, which makes them universal.
No need for any silicone.