28 inch window channel balance see photos

A handy person from Gilbert AZ says:
November 6, 2017
I think it is a 351 but I don't know what option. maybe 2730?
thank you
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
November 10, 2017
Thanks for your question. If the depth of your bottom balance shoe is 1", then I would recommend going with our S351-28 channel balance with a 2730 option based on your stamp of "27-3".
28" Series 351 Channel Balance
28" Series 351 Channel Balance
S351-28
$10.97
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