Channel Balance Replacement

A quick learner from Huntington Beach says:
Hello,

I need to replace a couple sets of channel balances and am hoping you can help me hone in on the correct parts. The first 4 pictures starting with the one stamped with a "30" on it are all from the same channel balance. The metal part of the sash is 31 inches. The last picture with the "15" stamped on it is from a different balance, but I believe they have the same style end caps. (I have pictures of the other one too, but could only upload 5 pictures.) The one with "15" stamped on it is 16 inches long. Are you able to direct me as to which parts I should buy? These are for "Pacific Windows" brand windows if that is helpful.

Thank you!
Cynthia
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Casey from SWISCO responded:

Hi Cynthia, thanks for all the balance info! Based off of your photos and the stamps you provided, I think you may need our S380-16/S380-31 or the S385-16/S385-31. You'll need to measure the depth of the bottom end cap to determine between the two. They're basically identical balances, except the S385 shoe has a depth of 1-3/32" and the S380 has a depth if 1". Let us know if there are any additional questions that I can help with!

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Comparison of 15-004 and 15-005
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