Caldwell 29 4 JP Window Blance

A home owner from Jacksonville, FL says:
I need several replacement Caldwell window balances. 1/2" X 30" the only markings I can find on one of them is " 29 4 JP CALDWELL".

A customer submitted photo of channel balance attachments.
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Paul from SWISCO responded:
Thanks for posting, Ken! It appears you have a winged top attachment, and non-winged bottom attachment. The balance that replaces your old balance is our S395-30 with the option 2940.
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