Coil: Windows Parts

Question

Thank you for sending me the needed replacement parts. However, zI need help identifying the coil. The number I Isee on the original coil is 408. Please find attached a picture.

Casey · Accepted Answer

Hello,

It looks like you have an old-style Simonton coil balance assembly. They no longer made this, but we have two possible solutions for you to consider.

The first is our 15-192 pivot shoe, along with our Series 170 coil spring (and other parts related to its store page). This is a Certainteed brand part, but I have had customers in the past tell me that they got it to work after grinding down the front of the face, which sticks out just a little too far for this window. Also, note that you may need to reuse the center cam from your original shoes to ensure compatibility with the pivot bars.

detail of 15-192

The other option is a more modern replacement that I think works just as well. The video below will go into more detail. This will explain the parts you need and how to install them in your window. Note that you will need the exact weight of your sash to calculate the proper spring strength. You want to divide that weight by the number of springs that support the sash. Thanks for posting.