Jordan window balance

A quick learner from AZ says:
August 27, 2019
I am trying to replace my jordan window balance and am looking for advice on parts. My dimensions match up to the S390 -28 but I am not sure which option to choose. The stamp on my existing balance says (27 3). So I guess my question is do I get the 2730?. I'm also looking for the sash guide to accompany it. The good dash guide is attached in the picture.
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Tom from SWISCO responded:
September 3, 2019

Hello! Thanks for reaching out to us, and for your patience. I know it's been a long wait. Fortunately, we can definitely help with this hardware.

You are absolutely right on the stamp. A stamp of 27 3 corresponds to our 2730 option. If you wanted to be 110% sure, though, you can always weigh your sash.

As for the top sash guide, see our 18-180. This looks very close to me. I just recommend reviewing the dimensions we show for it to confirm that they all match up to yours.
28" Series 390 Channel Balance
28" Series 390 Channel Balance
S390-28
$10.97
1/2" Top Sash Guide
1/2" Top Sash Guide
18-180
$1.67
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