Caldwell 17 4 KP Window Balance

A quick learner from Los Angeles says:
July 9, 2023
The metal channel part is 18 inches long. The marking reads, 17 4 KP Caldwell. This is for a Milguard window.
Thumbnail of the uploaded file named IMG_8976 Medium.jpeg
Thumbnail of the uploaded file named IMG_8977 Medium.jpeg
Thumbnail of the uploaded file named IMG_8978 Medium.jpeg
Thumbnail of the uploaded file named IMG_8979 Medium.jpeg
Thumbnail of the uploaded file named IMG_8980 Medium.jpeg
Profile picture of Bob
Bob from SWISCO responded:
July 9, 2023

Thanks for posting. This looks like either an S380-18 or S385-18. The only difference between these two channel balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement. See the diagram below for reference. Compare to your old balance to determine which matches best. In either case, for a new stamp option choose 1740.

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.
18" Series 380 Channel Balance
18" Series 380 Channel Balance
S380-18
$9.34
18" Series 385 Channel Balance
18" Series 385 Channel Balance
S385-18
$9.34
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.