3640 Channel balance
It's tough to tell what you have from these photos, but it looks like you might have a version of our S745-16 Peachtree channel balance. Look it over and see what you think. Our stamp options are different from yours but you can weigh your sash to confirm the best one to go with.
Do I weigh the sash on a scale?
Like most people, I'm in bind, the widow are out and its a mountain home. Thanks George
Also do I need a terminal plug or does that come with the new balancer? Thanks Again
There are three strength options available for the S745-16. Like I said in my prior post, you will have to weigh your sash to confirm the best one to go with. Your stamp is different than the ones we use so I can't use that to narrow it down. Weighing your sash is your only option.
The terminal plug does come with our balance, yes. If you haven't already, I highly recommend visiting the S745-16 store page I've linked you to. This has detailed information that should help you make your decision.