Part to keep window raised and stay up and not fall down

A quick learner from Gambrills Maryland says:
Double hung windows. Installed in 1985 need the part that fits into the side of the window to raise the window and keep them from dropping down.
My name is Martha.
I am trying to find this part.woukd appreciate your help
Thank You
User submitted photos of window hardware.
Profile picture of Tom
Tom from SWISCO responded:
Hello Martha, we are glad to help you! Please take a look at our 26-016 and let us know if this is what you have been searching for.
A quick learner from Maryland says:
I think that the part 20-016 is the part I need. Thank you so much. I will order them on line.
Martha J
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