Need confirmation of part #s

A quick learner from OC So Cal says:
Hi. Please confirm the correct replacement for the following stamps. I believe they should all be 27" series S385, but unsure of the weight code.

26 4 EV CMC 2
26 5 EV CMC 2
26 9 KU CMC 2
Profile picture of Tom
Tom from SWISCO responded:
For the "26 4" and "26 5" stamps, I recommend the 2640 and 2650, respectively. For the "26 9," you will need to weigh your sash to confirm the best match.
A quick learner from OC So Cal says:
Thanks. Following are the weights:
26 9 = 24 lbs
26 5 = 23 lbs
26 4 = 19 lbs

Please confirm the weight codes. Thanks
Profile picture of Tom
Tom from SWISCO responded:
Thank you! Did you see the chart we have on the S385-27 store page? According to that, you would want the 2640 option for the 24 and 23 pound windows, and either the 2640 or 2630 for the 19 pound window. You may want to get the exact weight to see if it tips over or under 19 pounds to decide the better choice.
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.