Bob from SWISCO responded:
March 11, 2019
Thanks for posting. While I agree the top attachment looks like it might belong to a Series 370 Channel Balance, I really can't say for sure without seeing the balance removed from the window, with pictures of both the bottom and top attachments. You will also want to confirm that the metal channel, not including the end attachments, is 29". If so, then you would want the S370-29, with a stamp option of 2830. |