Caldwell balances

A quick learner from Jacksonville says:
March 30, 2015
I need to replace two of my window channel balances. They are labeled Caldwell 28 4 DM. They measure 29 inches and go in a window that is 30.5 inches. I think it's the S350-31 but I think the shoe is different than the 15-004. Also, I do not know what weight I need.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
March 31, 2015
How about our Series 390 channel balance? This comes with the 15-001 shoe, which may be a better match.

Based on your stamp of 28 4, I recommend our 2840 stamp option.
31" Series 350 Channel Balance
31" Series 350 Channel Balance
S350-31
$11.52
29" Series 390 Channel Balance
29" Series 390 Channel Balance
S390-29
$11.10
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