Channel balance help

A home owner says:
17" length and 16C engraved
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Casey from SWISCO responded:

Thank you for posting. Have a look at our S380-17 channel balance. This comes complete with a 19-005 balance top and 15-005 bottom balance shoe. Carefully compare your nylon fittings with ours to see if this balance is a match. Since your stamping does not correspond to any of ours, you will need to weigh your sash on a scale and refer to the sash weight chart listed on the store page. Get back to us if any questions or concerns come up.

A home owner says:
Thanks so much. I need the sash for the window
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Tom from SWISCO responded:

Sure thing! That looks like a match for our 18-180 . I recommend reviewing our dimensions just to be sure.

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