SWISCO - The Replacement Hardware Authority

Balance knife lock shoe

A quick learner from Lansing, MI says:
I have semco double hung tilt window where some of the balance knife lock shoes have broken.
They look similar to the 15-190, 15-104 or 15-197.
Which one would be the correct repacement part for these windows.
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Tom from SWISCO responded:
I'm afraid I can't say for sure what can work. The parts you gave me are all very different, and I don't know what you have. Can you show me a picture of the hardware you have installed now? Can you also give me your measurements? That will help us find something that can work for you.
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