I need to replace some non-tilt channel balances. These are 28" 2730. I'm guessing they are the 350 series - but can tell for sure (tops and bottoms). Please advise.
Tom from SWISCO responded:
July 12, 2017
This could be either the Series 351 or Series 390 depending on the size of the bottom shoe. That's the only difference between these two balances.