Channel Balance

A home owner says:
Can you please help me determine which weight range to choose for the channel balance I need to replace?
The numbers printed on the ones I removed are as follows:
25 3 LW CMC 7
The metal length is 26".

Thank you


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Paul from SWISCO responded:
Based on the stamp, I think you should consider our 2530 option. You may want to weigh your sash just to make sure that's correct, though.
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