Identify the right part

A home owner from on Channel Balance frame says:
only mark shows 27 3 BSL 00

00 is not certain because it was not readable.

Please identify the right part.
User submitted picture of channel balance attachments and stamp.
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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 home owner from California says:
My balance shoe, winged is 1 3/32" which your part number is 15-004.

Also the thickness of channel balance is 1/2"

The length is 28" even though the mark shows differently(27 3 BSL 00) as above.

Please identy this part.

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Tom from SWISCO responded:
Thank you! In that case, please see our S385-28 channel balance with the 2730 stamp option. Does that look about right?

The stamp does not denote length, but rather is a code that represents a certain strength. While not an official rule, generally the first two digits of the stamp is one number below the actual channel length. In this instance, the first two digits of the stamp are 27, for a 28" balance.
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