What bracket to choose for window channel?

A quick learner from san diego says:
Hi, I am not sure which window channel to order. My broken on is a 27" length x1/2" wide channel with the numbers 2630 bsi printed on the back. From your website, it looks like there are a couple of channels that have similar top and bottom brackets. I will attach a couple of photos of the brackets, and I hope you can tell me which to order. If it is the wrong one, are they returnable/exchangeable?

I would appreciate your help figuring out which replacement to purchase.
Please email me the number of the correct replacement channel.
Thank you so much for your assistance!
User submitted photos of a window channel balance.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting! Before I can offer an applicable replacement for this channel balance, I just need to know a bit more information about the bottom attachment. Please take a look at our 15-004 and 15-005 channel balance shoes, and note their depths. As you can see, they are 1-3/32" deep and 1" deep, respectively. Which one more closely matches your own bottom attachment?
A quick learner from san diego says:
Thanks for much for the quick reply! I'm not sure which direction is the depth. I took a few photos against a ruler--can you tell from the photos, or at least confirm which angle is the depth? Then I can measure more accurately, and choose the right one. Thanks for your time.
Profile picture of Mike
Mike from SWISCO responded:
Unfortunately your measurement was not of the shoe's depth.

But don't worry, it's definitely confusing!

This is the bottom shoe depth measurement:
Depth measurement picture.
A quick learner from san diego says:
the depth of the shoe is 1", so I guess it is 15-005. I should have enough to order now--thanks!
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