Paul from SWISCO responded:
October 22, 2014
Our Series 500 spiral balances have been used by wood window manufacturers since the 1940's. The tube has a diameter of 5/8" (or 9/16"), so if yours matches I think it's a great choice.
You said the top sash balance was 27", so see our S500-27 with the 17-012 bracket. For the bottom sash order S500-29 with the 17-012 bracket. Instead of using nails, I would use screws like our 33-017 to fasten the balance tube at the top and the 33-088 for the bottom bracket. You might want to also see our 75-004 charging tool to wind up the balances. See the link below for more information how this works. |
Paul from SWISCO responded:
October 23, 2014
Oh, my mistake. In that case, yes, I think 27" for the balance is good.
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