Question about Acorn window balance #2030

Thanks for posting! Actually, 2030 is not an identification number. It simply denotes the sash weight capacity of the balance. As you can see on the S710-21 product page, one of the stamp options is 2030. If you do have that Series, that would be the option you'd want to choose.

That said, I am not sure if our Series 710 would replace your Acorn balance. To help us identify the correct replacement hardware for your application, please remove the balances from your window and take a few pictures of them, and then post them here for us to look at.

Please make sure you take a picture of the attachments on both ends of your balance.