Replacement sash

A home owner from Summerfield NC says:
October 2, 2018
I know I am looking for a series 770 32" sash replacement. The attached photo is the number staled on the current part. I don't know what weight I am looking for and hope this photo helps. If not do I simply weigh the window and divid by 2. Assuming each takes half the weight.

Also not sure option?
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Tom from SWISCO responded:
October 5, 2018

Hi. Don't halve the weight! Take the window weight and compare the total weight to the chart in the product description on the S770-32 webpage. We already accounted for that in the chart.
A home owner from Summerfield NC says:
October 5, 2018
Thank you
32" Series 770 Balance
32" Series 770 Balance
S770-32
$13.67
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