Window balancer replacement identification

A home owner from California says:

The metal part of my balancer is 1/2 inch by 27 inches. The stamp on the balancer is as follows: 26-3 DD5 CMC 87

I have included pictures to help you with identification.

Thumbnail of the uploaded file named image.jpg
Thumbnail of the uploaded file named image.jpg
Thumbnail of the uploaded file named image.jpg
Thumbnail of the uploaded file named image.jpg
Thumbnail of the uploaded file named image.jpg
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Lauren from SWISCO responded:

Hello, thank you for posting,

With this combination of attachments, 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 will need a 27" balance with a 2630 stamp option.

Please review and let me know if you have any additional questions! 

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.

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