28 3 jk Caldwell

A quick learner from Seattle, wa says:
I am looking to replace a jk Caldwell channel balance 28-3. It is 29 in long and 1/2 in wide. Appears I need a series 385, but I am not positive. I also don't know what sash weight I have. Recommendations?


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Tom from SWISCO responded:
Hey, John, thanks for posting. What is the depth of the bottom shoe? The Series 385's bottom bottom shoe is our 15-004, which has a depth of 1-3/32". How does that compare to yours?

Usually a stamp of 28 3 corresponds to our 2830 option, but I recommend that you remove your sash from the window and place it on a scale to make sure it fits under the 2830's suggested weight range just in case.
A quick learner from Seattle, wa says:
Thanks for the help. Sash is 13 lbs, so will go with the next option down.
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