Bob from SWISCO responded:
May 2, 2019
Thanks for writing in. Yes, this is either a S351-35 or S390-35. he only difference between these two balance Series is the 'depth' of the bottom nylon shoe. The Series 351 bottom nylon shoe has a depth of 1", whereas the Series 390 bottom nylon shoe has a depth of 1-1/8". Compare with your old balances and see what you think matches best. You will indeed need a stamp option of 3440. For you Top Sash Guide, it would be best to see 'mugshot' pictures of it removed from the sash, from the front and side. |