A home owner from Mount Vernon Washington 98274 says:
November 6, 2020
Looking for window/vent stops for 1992 era Milgard windows. Approx 1 1/8"x 1/4". Plastic with metal clip on the end. Horizontal sliding window stops. Allows window to open about 2" for security. See attached pictures.
Bob from SWISCO responded:
November 10, 2020
I believe you could use our 26-338 to replace this vent stop. Take a look, review the dimensions, and see what you think.