32-9? What Stamp Option do I Need?

A quick learner from Gilbert, Arizona says:
I need the S385-33 Channel Balance but my weight stamp says "32-9 JX CMC 7" It's for a Milgard window.

What weight do I need to order?

Thank you,
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Bob from SWISCO responded:

Hello there. This is a fairly common issue. Stamp codes ending with '9' are from an older rating system that we do not use. To know what stamp option to select, you will need to obtain the exact weight of your window sash. You can then match that weight with one of the weight ranges listed alongside each stamp option on the product page. 

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