Jordan Window Balancer

A home owner from Scottsdale, AZ says:
I am seeking replacement balancers and accessories to replace balancers with the following code printed on the existing balancer: 28 4 AX CMC 7

The above balancer is 1/2 wide and the metal portion is 29" long.

Please give me the correct part number for the balancer and the replacement plastic part that attaches to the sash. Thank you.
User submitted picture of channel balance attachments and stamp 28 4 AX CMC 7.
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Tom from SWISCO responded:
Thanks for posting. Before I can confirm what Series channel balance you have, I'll have to figure out what your bottom shoe is. Please look at the measurements for our 15-001 and 15-002 bottom shoes and note their depths. As you can see, they are 1-1/8" deep and 1" deep, respectively. Which measurement more closely resembles your own shoe?
A quick learner from Scottsdale, AZ says:
The bottom shoe measures 1"
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Tom from SWISCO responded:
Thank you. In that case, I'd recommend our S351-29 channel balance. Does that look about right? I also recommend the 2840 stamp option. This can support a window sash weight range of 23 through 28 pounds. Does your sash's weight fall within this range?

Please keep in mind that the weight range information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.
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