Tom from SWISCO responded:
May 8, 2017
Thank you for contacting us. We believe you may need our S385-26 channel balance. The stamp option you would use for your 25 4 stamp would be our 2540. Take a look and get back to us with some thoughts.
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Tom from SWISCO responded:
May 10, 2017
We sure do! These are known as top sash guides. At first glance, yours look like our 18-008, but look it over and see how well our measurements match up.
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