Need new channels balances

Question

34" balance length
1/2" width
Has wings
1 3/32" balance shoe depth
Balance stamp 33 3 BSI
22.6 lbs window weight

Bob · Accepted Answer

Thanks for posting. This looks like either an S380-34 or S385-34. The only difference between these two channel balances is the 'depth' of the bottom nylon shoe. See below. Measure your old balance's shoe to see what matches best. For a stamp option choose 3330.

Comparison of the S378, S380 and S385 balance shoes.