Identify channel balance part

A landlord from Phoenix says:
February 25, 2015
From Jordan window (approx. 2006)
Has numbers 27 2
Has letters B.S.I. then PR underneath

Channel metal is 28 inches long
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
February 26, 2015
Hello! I recommend our S390-28 channel balance as a possible replacement. Just make sure the dimensions of the nylon fittings match yours. I would also recommend our 2720 option, but you can weigh your sash to confirm that this is correct.
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