Paul from SWISCO responded:
July 11, 2014
The balance box you are showing is our 24-1033, based on the stamp of 10 31, but you say you have a 3056 cottage window. My records show the lower sash is larger than the top sash, so for this you might want to consider our 24-L9-1327 (left side) and 24-R13-927 (right side). You may want to confirm what your window is before you make your decision.
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