|
Casey from SWISCO responded:
October 19, 2023
Hello, It looks like you have either our S351, with a 15-002 bottom attachment, or S390, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. With that being said, you referred to the balance length as both 34" and 24". Based on the 34B BSI stamp that you included, the metal channel length of these types of balances would generally be 35", not including the end fittings. I would recommend double-checking your length measurement to confirm the correct replacement. If your balance channels are 35" long, you'll also need 3420 spring strength options for your replacement balances. Thank you! 
Comparison of the S351 and S390 balance shoes.
|
|
|
Casey from SWISCO responded:
October 19, 2023
Great, I agree that you would need the S390-35 channel balances with 3420 strength options. You are welcome to order them directly on our website or by giving our customer service department a call at (888) 991-1929. |
|
|
Casey from SWISCO responded:
October 20, 2023
I'm glad that we were able to help! Just let us know if you need anything else. |
