Tom from SWISCO responded:
February 15, 2017
Thanks for posting. Depending on the depth of your bottom balance shoe you will need either our S380-23" balance (1"shoe) or our S385-23" balance (1-3/32" shoe). Take a look at the dimensions printed on each balance photo to see where to measure. For your spring weight option of 22D please choose our option 2240. Get back to us and let us know your thoughts.
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Paul from SWISCO responded:
March 10, 2017
It's hard to make out the difference between the balances in your new picture. It doesn't appear to be a significant difference. The manufacturer of your old balance is no longer in business and the Series 380 should work for you. I've personally used it many times for this make of window. See the video below for more detailed instructions on how these install.
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