Bob from SWISCO responded:
June 3, 2023
Thanks for posting. This looks like our S770-26 Tilt Window Channel Balance. Please compare and let me know if you agree. You need to choose a stamp option for these balances, which simply designates the weight range the balance is calibrated to support. That stamp I believe actually reads '26B', which correlates with our stamp option of 26B, which designates a balance that can support a window sash in the weight range of 11 through 17 pounds. Let me know if that makes sense, or if you have any other questions. |