Paul from SWISCO responded:
June 27, 2016
Hello! Hopefully I can help. It's hard to tell based on this picture, but I believe that our Series 745 might be what you want. To be more specific, start with our S745-20 channel balance. I would also recommend the 19.25-4 stamp option; two balances with this stamp option can carry 13 through 17 pounds. What do you think?
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Tom from SWISCO responded:
June 28, 2016
The 19.25-4 is not a balance, it is a stamp that represents the strength of the S745-20 spring. The S745-20 has many such stamps, but based on your sash weight, the 19.25-4 is what I would recommend. I highly recommend looking over the S745-20 store page and reading the information we have there. That should help elucidate any concerns you may have.
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