Please confirm this channel balance before I buy

A handy person from Southern California says:
Hi,
I need to buy several pairs of channel balances. They are all the same length and option. So, I would just like confirmation that I'm selecting the correct one based on your expert analysis.

I think I need to get the 27" Series 351, option 2630.

What I have now:
2630
27" long channel
0.5" wide channel

Thanks!
Mike
Thumbnail of the uploaded file named channel_balance_top_end_2630.jpg
Thumbnail of the uploaded file named channel_balance_bottom_end_1inch_2630.jpg
Thumbnail of the uploaded file named channel_balance_bottom_end_2630.jpg
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Emily from SWISCO responded:

Hi, Mike!

With this combination of attachments, it actually looks like you could have either an S380 or S385 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. You'll also need a spring strength option of 2630. 

If you have any other questions just let us know. 

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.
A handy person from Southern California says:
Thank you. I'll have to measure a few of these because they seem worn down. May have been 1 1/32, and possibly worn down to 1.
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Emily from SWISCO responded:

Sounds good! If you have any further questions just let us know. 

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