Tom from SWISCO responded:
March 22, 2016
Yes, coil balances are unique in that to determine the proper strength option, you would divide your sash weight in half. Assuming you have the Series 140 then the S140-10 would be a good choice for your 19 pound sash.
The other part you reference may be your pivot bar, but I can't be sure. Could we see a couple pictures of it? Can you also give me the dimensions of the pivot bar itself? |