Casey from SWISCO responded:
December 18, 2019
Check out both our S380-12 and S385-12 channel balances. The only difference between these two balances lie within the depth measurement of the bottom balance shoe. The depth measurement of the Series 380 is 1" and for the Series 385 is 1-3/32". Measure yours to see which of these is the better match. Since your stamping does not correspond with any of our stamp options, you will need to weigh your sash on a scale and refer to the sash weight chart listed on the store page. |