Andersen sash balancer

Thanks for posting. I'm afraid the number you cite is a generic Andersen code. The one we need is stamped on the tab on the side of the balance. I can sort of make it out in your fourth picture, but a clearer picture to confirm would be most helpful. To answer your other question, many Andersen balances work on either side of the sash; but I think it's possible this is a case where you need a different balance for each side of the sash. But once we have a clearer picture of the stamp code on that tab we'll know for sure. Many thanks. 

Thanks for getting back to me. As it turns out, this is one of the balances that will work on either side. See our 24-1231. This is meant to replace Andersen balances that include the stamp code 1227. Let us know if you have any other questions!