window channels - pics attached

A handy person from 95124 says:
September 25, 2023
Need 2 of these window channels, original ones are marked: Caldwell 31 3 IO.
Looks like S385-32" option: 3110. Does this look correct?

Thumbnail of the uploaded file named BURTON LRoom Caldwell Channel Balance 31 3 10 #1.j
Thumbnail of the uploaded file named BURTON LRoom Caldwell Channel Balance 31 3 10 #2.j
Thumbnail of the uploaded file named BURTON LRoom Caldwell Channel Balance 31 3 10 #3.j
Thumbnail of the uploaded file named BURTON LRoom Caldwell Channel Balance 31 3 10 #4.j
Thumbnail of the uploaded file named BURTON LRoom Caldwell Channel Balance 31 3 10 #5.j
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Emily from SWISCO responded:
September 26, 2023

Thanks for reaching out to us. Does the bottom fitting measure 1-3/32" deep? If it does then I think the Series 385 is a good match. However, keep in mind that we also sell the Series 380 which has a 1" deep shoe. I also recommend the 3130 stamp option based on the 31 3 printed on the metal channel.

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.
A handy person from 95124 says:
September 26, 2023
Ok, great. Any idea what the 10 stands for on this?
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Emily from SWISCO responded:
September 27, 2023

The stamp printed on the metal channel represents the weight range the balance is designed to support. For example, the 3110 stamp option is calibrated for a window sash weighing 7 to 12 pounds. 
32" Series 380 Channel Balance
32" Series 380 Channel Balance
S380-32
$11.52
32" Series 385 Channel Balance
32" Series 385 Channel Balance
S385-32
$11.52
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