15-175 pivot shoe

Thanks for reaching out! The 15-175 pivot shoe has been discontinued and is no longer made anymore but the 15-177 will work fine as a replacement. Look over the dimensions to confirm, although, I am confident that these will work as a replacement for you.

Alternate image for 15-177

These are compatible with the Series 152 coil springs as well. To determine which spring is needed for your coil balance assembly, you'll need to check for any stamps/markings on the metal coil. If there are none, you'll need to obtain the exact weight of the sash (moveable window) and divide it by the total number of coils in the window. This will give you the spring strength needed for your spring(s).