PgT Impact series 7700a single hung channel balance

I'm afraid it's not possible to identify what you have based on this photo. In order to identify a balance, you need to remove the original and show us a clear picture of the top and bottom ends without obstruction. We can then check our inventory for a match.

Please note that we may request more information and photos after that, but we have to know what to ask for, first. Make sure to show all relevant attachments just in case.