15" series 350 mark 14 9 caldwell

A quick learner from Anaheim, ca says:
June 24, 2017
Hello, my markings are 14 9 caldwell. I am confident I have the corect length and series, but need guidance on which stamp option I need. Please advise.
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Tom from SWISCO responded:
June 26, 2017
Thanks for trusting SWISCO! The stamp option of your balance depends upon the weight of your window sash. The best way to identify your stamp option is to remove your window sash from the window frame, weigh it on a bathroom scale, and choose the corresponding stamp option on the item webpage. Let us know if you need any more help.
15" Series 350 Channel Balance
15" Series 350 Channel Balance
S350-15
$9.34
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