Each of Hehr my sliding windows originally had two 2 1/2" anti Rattle Clips installed.
I have a few that need replacing and found a source at Window Parts - Anti-rattle clip - 1/4"
for $6 in 6 ft lengths.
Probably more than I need but thet will only ship the full 6ft length and with the shipping tube at $21.42 and $36 shipping, it comes to $63.42.
I called All-Rite and they will not cut it and ship it in an envelope without charging the same as a extra labor charge.
Does anyone know of another source?