Spiral balance questions
If I recall back to my early hardware knowledge, it sounds like you may have a MW Manufacturer window. That said, for your 22-1/2" balance, I would suggest continuing to use the Series 850 to keep the replacement simple for the smaller window. As for the other two sizes, our Series 795 will be able to work in its place. We would just need for you to provide us with the weight of the sashes and width of the bottom shoe. You will also need to change the pivot bars to our 26-366 to work with the Series 795.
Also will the channel on the 795 fit in my side opening of 1/2"?
Thanks
Wade
You'll need to get the exact weights for each sash. I recommend getting the weight down to the ounce, just to be on the safe side. We have a chart on both the S795-28 and S795-32 store pages that tells you exactly how much weight each option can support. All you have to do is weigh your sash and refer to those charts.
The Series 795 should fit in your window track, yes.