Window Balance part identifier

A home owner from Indianapolis, Indiana says:
April 23, 2018

I am in need of some new window balances. I think I have narrowed it down to your 15" 380 series. The channel measurements are 1/2" wide and 15" long. The only issue is, I don?t understand the markings on the old parts (see pics). Hopefully you can help me.

Thanks

Steve 

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Thumbnail of the uploaded file named image.jpg
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Paul from SWISCO responded:
April 26, 2018

Hello, Steve. The stamping of "14 4" corresponds to our 1440 option which holds a sash weight range of 12-13 pounds. Does that sound about how much your sash weighs?
A quick learner from Indy says:
April 26, 2018
Yes, that sounds about right. 12 to 13lbs.
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Paul from SWISCO responded:
April 26, 2018

Great! Sounds like a good fit!
15" Series 380 Channel Balance
15" Series 380 Channel Balance
S380-15
$9.34
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