Clip that screws to the top of operative sash and retains spring counterbalance.

A contractor from Naples Florida says:
Part measures 1-1/2" tall x 7/8" wide x 1/2" deep.

I need the part number so as to order overnight.
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Tom from SWISCO responded:

Take a look at our 18-166 to start out. This looks similar to your own top sash guide, but I would make sure that all dimensions match. If not, let me know how and we can find something better.

Profile view of 18-166
Profile view of 18-166
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Detail of 18-166
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