Can you help me find this channel balance?

A quick learner from Tacoma WA says:
1/2 inch channel width
20 inch length
Not sure what the weight is but "19 3 DR Caldwell" is stamped on the side.
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Hey, thanks for posting. This balance appears similar to our S385-20, though I can't say for sure. How does it compare? Is the bottom shoe the same as yours? Check out the dimensions below.

Detail of 15-004
I would also recommend our 1930 option, though you should weigh your sash just to make sure that's correct.
A quick learner says:
Looks like it. Thanks
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