Window is missing its channel balances

A home owner from Oregon says:
June 28, 2016
I have a non tilt window that is missing both of the channel balances,I do not have anything to reference a part number. My house only one this window.
Are there other ways I can determine what model I should order from you?
Thank you.
User submitted photos of a window balance.
A home owner from Oregon says:
June 28, 2016
Add some photo. hope you will need it.
Thanks.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
June 30, 2016
Without having the original balance on hand to use as reference, it's very hard to say what could work. An educated guess would be our S385-22 channel balance with a 2140 option. Look it over and see what you think.
22" Series 385 Channel Balance
22" Series 385 Channel Balance
S385-22
$9.59
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