Window Spring 2820X
Thanks for your post! The top sash guide you have reminds me of the 18-161 5/8" Sash Guide. Look over the dimensions on the diagram below to confirm that this is the correct replacement.
Regarding the balances, unfortunately, I cannot use the stamp to identify the series. The stamp tells us the weight range a balance should be able to support but they aren't always interchangeable with our stamp ratings.
We can supply you with the balances you need, but I'll need to see clear photos of the top and bottom attachments. I'll also need to know the length of the metal channel. See the video tutorial below for reference:
Balance length is 23"
The stamp on the Balance is 2230Z and I included pictures of both ends and clip.
Thanks for the additional photos. Your window balances can be replaced with the Series 378, Series 380, or Series 385 Channel Balances. You'll need to confirm the depth of your shoes to confirm the right series.
For the the 2230 stamped balances the length of the channel should be 23" and the 2920 stamped balance, the length should be 30". Be sure to double check.
