28" channel balance

A home owner from San Diego says:
July 22, 2020
I've attached photos of the top guide and bottom shoe. The 1/2" wide 28" long channel balance is stamped 2730. I want to replace both channel balances for one window. Thank you for letting me know what part I need. To my untrained eye it looks like part S350.

Thanks, Michael
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Bob from SWISCO responded:
July 24, 2020

Your untrained eye is right on, Michael. This looks like an S350-28, and yes, you'd want a stamp option of 2730. Let me know if you have any further questions.
28" Series 350 Channel Balance
28" Series 350 Channel Balance
S350-28
$10.97
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