SWISCO - The Replacement Hardware Authority

Window balance markings

A quick learner from South Florida says:
I believe I need the S351-29 but the markings on the broken one don't match the ones you have listed.
User submitted a photo of a window balance.
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Paul from SWISCO responded:
This stamp usually corresponds to our 2820 option, but is there any way I can see pictures of the top and bottom fittings? I would like to confirm that you have the Series 351 balance, just in case.
A quick learner from SFL says:
It is 1/2 inch wide and 29 inches long. Images of top and bottom fittings attached.
User submitted photos of a window balance.
A quick learner from SFL says:
Some more images.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Thanks! Please take a look at our S390-29 channel balance, instead. I think this might be a good match. I would also recommend the 2820 option, like I mentioned before.
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