30 inch window channel balance

Question

I don't know what I should buy to replace it on the pictures that I am sending.
Please help me out. On the channel balance, it reads 29 6, and BSI, which I don't understand.

Paul · Accepted Answer

We appreciate you contacting SWISCO. I believe you could be looking for our S385-30 channel balance that comes with a 1-3/32" bottom balance shoe. Measure your bottom balance shoe to see if it measures up with ours. If so, you will go with the 2960 stamp option.