Jasmine from SWISCO responded:
April 24, 2023
Thanks for reaching out! Your pivot shoes appear to be an older discontinued version of a shoe we used to sell but is no longer available. The good news is that our 15-177 should work well as a replacement. Look over the dimensions and compare it to your existing shoe to confirm that this is the right replacement. Alternate image for 15-177
The are compatible with the Series 152 Coil Spring. To determine which coil springs are needed for your window, you'll need to look for any stamps/markings on your existing coils. If there are no stamps/markings, you'll need to obtain the exact window weight and divide it by the total number of coils in the window. You pivot bar appears to be our 26-466. Look over the dimensions to determine if this is the replacement pivot bar you'll need. Dimensions for 26-466
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