Weight identification

A quick learner says:
I have identified my balance as a 34" Series 350 Channel Balance Product Code: S350-34. I need to identify the weight for the window? On the balance it is stamped with 33-9 KX CMC 11. According to the web site chart these dimensions do not correspond to any of the weight scales. Can you identify which window weight balance I should purchase by the provided stamped dimension? Thank you.

/R
Eric
Profile picture of Tom
Tom from SWISCO responded:
I'm afraid that your stamp does not tell us what you need. Have you weighed your sash on a scale yet? That's the best way to determine what you need. Once you know the weight you can simply match it up to our chart. If none of our existing options covers your weight, though, let us know and we can work from there.
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 non-tilt channel balance
How to replace a non-tilt channel balance
GUIDE
READ >
Choosing a Non-tilt Channel Balance: What Will We Need?
Choosing a Non-tilt Channel Balance: What Will We Need?
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.