Looking for replacements

A contractor from California says:
June 7, 2019
I'm not sure the name of the windows it came off of. But the 28 1/4 long balancer has the stamp code of 27 4 and the longer one that is 34 inches long has a stamp code of 33 3. Please let me know if you need anymore info.

Thanks
Thumbnail of the uploaded file named 15599624786991763551649220012137.jpg
Thumbnail of the uploaded file named 15599625392868923993401437207335.jpg
Profile picture of Paul
Paul from SWISCO responded:
June 10, 2019

Many thanks for your correspondence. Looks like you have the old style Milgard window balances. Could you double-check the length of the shorter balance, not including the nylon fittings? See if it is not 28" instead. If it is, see our S385-28 with a stamp option of 2740. For the 34" long balance, see our S385-34 with a stamp option of 3330.
A contractor from California says:
June 11, 2019
Yes. Its 28. I will order them. They will work right?
Profile picture of Paul
Paul from SWISCO responded:
June 12, 2019

Thanks for double-checking. Yes, if the balance is 28" long, then the S385-28 with a stamp option of 2740 should work for you. 
28" Series 385 Channel Balance
28" Series 385 Channel Balance
S385-28
$10.97
34" Series 385 Channel Balance
34" Series 385 Channel Balance
S385-34
$11.73
How to replace a window sash channel balance
How to replace a window sash channel balance
VIDEO
WATCH >
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.