Sliding Window Guide

A home owner from New Fairfield, CT says:
October 28, 2019
I could find no names, numbers, or markings on my sliding window, so I don't know the manufacturer. The guides I need measure 7/8" tall. At first I thought of the Keller or the Reynolds that you show, but the slot is rectangular as you can see from the picture. Any ideas?
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Bob from SWISCO responded:
November 4, 2019

Thanks for writing in. This looks like a pivot shoe. I think we can replace it for you, but we'll need to see it out of the window to be certain. If you could measure the width and thickness of the shoe, that would be of great help as well. Finally, you say this is for a sliding window. Do you mean a double-hung window that you can move up and down? Sliding windows specifically refer to horizontal moving windows, so I'm just double-checking to be safe. Many thanks.
A home owner from New Fairfield, CT says:
November 4, 2019
You're right! My window is a double-hung that moves up and down only. I tried to take another one out, but it broke. (Not sure how to do it safely. I do have another window with these parts intact.) I measured the rectangular slot in front: 3/16 x 5/16. Does that help?
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Bob from SWISCO responded:
November 5, 2019

Unfortunately, that's not quite enough to go on. See the video below for details on how to remove your pivot shoe. See if this helps. 
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