sash weight match

A quick learner says:
my channel is stamped 3606.
I am looking at product code 350-37.
Should I select one of the optional choices?
Profile picture of Paul
Paul from SWISCO responded:
You will have to select one of the stamp option choices, since that determines your spring strength. 3606 is a weird stamp, and I'm not sure which of ours is a match. I recommend weighing your sash on a scale and referring to the chart we have on the S350-27 store page.
How to Replace a Non-Tilt Channel Balance
How to Replace a Non-Tilt Channel Balance
VIDEO
WATCH >
How to Repair a Jammed Window
How to Repair a Jammed Window
VIDEO
WATCH >
How to Identify Replacement Channel Balances
How to Identify Replacement Channel Balances
VIDEO
WATCH >
How to replace a channel balance
How to replace a channel balance
GUIDE
READ >
How to replace a non-tilt channel balance
How to replace a non-tilt channel balance
GUIDE
READ >
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 3-4 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 (888) 991-1929 or at help@swisco.com.