Old Double hung windows, unknown brand -

A contractor from Pittsfield, MA says:
piece from each side of the window frame that receives the window fastener. I have photographed two different pieces here but they appear to be completely interchangeable. I need 40 of them.
User submitted photos of a pivot shoe.
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Paul from SWISCO responded:
This is an old discontinued pivot shoe. The manufacturer suggests a 15-118 as a replacement. See what you think.
How to replace a tilt window spiral balance.
How to replace a tilt window spiral balance.
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How to Remove a Pivot Shoe (Cutout Method)
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How to remove window pivot shoes
How to remove window pivot shoes
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Anatomy of a tilt window
Anatomy of a tilt window
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How to adjust a spiral balance on a tilt window
How to adjust a spiral balance on a tilt window
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