Sash window channel balances

A quick learner from Penn Valley, Calif says:
October 18, 2017
I'm replacing channel balances in a sash window. The channel balances being replaced are stamped "25 2 BU CMC 2". I could not cross reference this on your charts. I believe it's the series 385, 26 inch length of metal, not sure the weight. Please advise.
Profile picture of Casey
Casey from SWISCO responded:
October 18, 2017
I think I can help you with your question. With the stamped number "25 2" you provided, that would correspond to our 2520 stamp option. However, if you want to make extra sure that is the correct stamp option, you can always weigh your window sash and correspond that number to our sash weight range chart.
26" Series 385 Channel Balance
26" Series 385 Channel Balance
S385-26
$10.55
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.