Need new channel balances for old windows.

A quick learner from Las Vegas says:
March 28, 2017
Hi there! I'm trying to help my landlord replace my channel balances, and wanted to make sure that I'm buying the correct ones since I need at least 6 of them. The metal piece measures 23-1/4". I looked at the link for the S745-23, but am not sure about the plastic end pieces. One of the ends of each balance was broken when they were taken out prior to moving in, so I'm not sure what that end is supposed to look like. Also, there's a stamp in each -2320 BSI- which I couldn't find as an option for the S745-23. Is this the part my landlord should be ordering, or is there another channel balance that you would suggest? Also, if you need it, the exposed glass measures 21-1/2". Thanks for your help!
A quick learner from Las Vegas says:
March 28, 2017
Here's a couple photos for reference.
channel balance
Profile picture of Tom
Tom from SWISCO responded:
March 29, 2017
I'm afraid I can't make out what you have based on these pictures. Can you take a clearer picture of the top and bottom nylon caps? If you can show us an undamaged balance, that would be even better.

Based on what I can see, at least, I don't think the Series 745 is what you have. Yours looks like an entirely different setup, but I need to see clearer pictures to be sure.
23-1/4" Peachtree Balance
23-1/4" Peachtree Balance
S745-23
$16.30
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