Double Hung window part.

A quick learner from Harrison, NJ says:
Please send a picture of the size you have available. Thank you so much!
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Casey from SWISCO responded:

Hello,

Your pivot shoe looks like a match to the 15-177, which is used with the S152 coil springs. Take a look and compare the dimensions below to your part. I would recommend using one S152-9 spring on each side to support your sash weight. We'll also relate a few videos on this page to help you through the replacement process. Thank you! 

Alternate image for 15-177
Alternate image for 15-177

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