Paul from SWISCO responded:
June 19, 2019
Let's start off with your top sash guide. Take a close look at our 18-064. Review our measurements to see if they are a match with yours. As for your channel balance, yours look very similar to both our S351-29 and S390-29. These look identical with the exception of the bottom balance shoe. Compare the depth of your bottom balance to each balance's shoe (shown exactly how in the diagram below) to determine which balance would make the better replacement. Whichever one you decide will go with a 2830 option. Comparison of the S351 and S390 balance shoes.
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Paul from SWISCO responded:
June 21, 2019
If your measurements match up better to the 18-115 top sash guide, then you should be ok to go with using it as a replacement. |