coil window balance

Question

looking for a replacement for this window balance. No markings to indicate weight. dual coil. only markings found on each cover are letters. Window sash is about 29.5"x37.25"

Emily · Accepted Answer

Your pivot shoe resembles our 15-175 which is used with the Series 152 coil springs, but you'll need to confirm that the width and thickness match the dimensions on our product page.

If your coils do not have any numbers included in the stamp, you'll need to weigh the sash and divide the weight by the number of coils on both sides of the window to choose the correct weight option.