Channel balance 20 D USB

A quick learner from Richmond, Canada BC. says:
April 22, 2016
Hi, I would like to know if the series 350 is identical to what I have in the picture. It also indicate an option that I need to choose which I don't know what to choose. The stamp that I had is showing ( 20 D USB ) that I don't see on the Option selection.
Please let me know if the series 350 matches the balance I have. I will be needing 2 (left and right)of the complete parts with spring, and end part of it.

Thanks,
Fidel
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
April 25, 2016
I agree, the Series 350 looks similar. Just confirm the measurements are the same. A stamp of "20 D" usually corresponds to our 2040 option.
21" Series 350 Channel Balance
21" Series 350 Channel Balance
S350-21
$9.59
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