1/2 inch, 18" long channel balance from a 2000's Milguard window

A home owner from Portland, Oregon says:
April 26, 2021
Hello!

The cord in our channel balance just broke the other day and I'm struggling to pinpoint which specific balance this is.

It's a 1/2" (or 9/16") channel, 18" long, with the markings "17 4 AT Caldwell".

The inside of the fixed part of the glass window itself has the markings "0315 305443.003 DSCLMG5 08MAY2000" so obviously the window was manufactured on the 8th of May, 2000.

Let me know if you need more photos or info!

Thanks!
Darin
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Bob from SWISCO responded:
April 28, 2021

Hi Darin. This appears to be either our S380-18 or S385-30. The only difference between these two balances is the depth of the bottom nylon shoe. See the picture below that illustrates the difference. In either case, for a stamp option choose 1740.

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.
A home owner from Portland, Oregon says:
April 28, 2021
Thanks for the help! That distance in your photo measures 1.08" on my balance using digital calipers, and 3/32" is 0.09", so that means S385.

Thanks again!
Darin
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
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