Window coil balance

Hi there!

Thanks for reaching out to us. We're happy to help with this. We'll just need more information to ID your hardware. Can you show us a photo of the pivot shoe? 

Thank you! Your pivot shoe is the 15-111, which is compatible with the 1/2" wide Series 160 coil springs (sold separately). The spring shown in the new photo appears to be stamped with a weight of 4.5 pounds, which corresponds to the S160-04 4.5-pound coil spring. However, the weight code in your initial photo is too faded to read clearly. If you are uncertain, it may be helpful to weigh the window sash on a scale and then divide that weight by the total number of springs in the window. The video below will explain how to determine the appropriate coil weights.

If you need new coil spring supports, see the 15-150D, 15-150T, and 15-150S depending on the number of springs used per side.