sash lifter

I'm not quite sure what it is you need, but I suspect you might need a balance. I can't say with any certainty what you have without knowing what stamps are printed on the balance itself, but I think you might have an Andersen Narroline window. These used our 24-531. If not, I will have to see a picture of the balance out of the window so that we can see the stamps written on it.

I don't know for sure, it's hard to predict that kind of thing. All I can say is that the only way to know for sure what Andersen balance you have is to refer to the stamps printed on the original balance box. We have a video that tells you exactly how you can do this.