Bob from SWISCO responded:
August 13, 2020
A stamp code of 1226 indicates you'd need our 24-1231, which can replace old Andersen balances that have the 1226 stamp code. You are correct, however; that tab on our newer balance boxes is an important difference. What you'll need to do is chisel out space in the window frame to make room for the tab. This blog post here goes into more detail, and also has a video detailing the removal and replacement of these Andersen balances. |