Help with window coil balance parts

Hello,

In image #7, your window balance system appears to use the 17/32" thick 15-199 and one S165 coil spring since your photo shows only one coil spring cover. At the end of the coil spring, there should be a stamp weight number on it, which you'll need to choose the corresponding strength option. 

Alternate view of 15-199

As for the pivot bar in image 5, the 15-199 pivot shoe normally uses either the 26-378 or 26-021. We recognize that they are longer than your original pivot bar but we believe your sash should have space to compensate for a longer pivot bar.  With that being said, you'll need to compare the backset of the installation hole that attaches the pivot bar to the sash to our replacement options.

Alternate image for 26-378

Alternate image for 26-021

As for image 7, this is a completely different balance system. The pivot shoe would be our 15-087 and we believe it is using one Series 180 coil spring inside the plastic housing. Again you will need the stamp code on the old spring to order the correct replacement. If you need new pivot bars for that window as well, you can start by comparing the original part to our 26-040. We strongly recommend removing your original hardware from the window to compare to our specifications. Thank you. 

Detail of 15-087

Series 180 coil balance diagram

Alternate image for 26-040

We're happy to help! Just let us know if you need anything else.