1620 is stamped on front side of channel.

A quick learner from Florida says:
Thinking the S390-17 is the one??. Your thoughts?
Thumbnail of the uploaded file named 20200416_075652.jpg
Profile picture of Casey
Casey from SWISCO responded:

Hello,

You very well could need the S390-17 as long as your bottom attachment has the same 1-1/8" depth as shown below. If not, I'd recommend you take a look at our S351-17 with a 1" bottom attachment. For wither balance, you'll need a 1620 spring strength option for your replacement based on your balance stamp. Thank you!


Measurements of 15-001 bottom balance attachment.
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at 856-317-6263 or at help@swisco.com.