Slides for bath and other windows

Thanks for posting. It appears you have an older version of the 15-180 Pivot Shoe. This shoe uses Series 190 coil springs to regulate the movement of the window. You'll need to choose spring weights to determine the strength of each coil you replace. Look for stamps on the old springs that indicate the weight you need to choose. If there are no stamps on the spring or you are unsure, give me the exact weight of the window sash that these coil springs support, and I can work it out for you. Finally, if your old housing for the springs is undamaged you can reuse it; otherwise, see the 15-181 and 15-182.