Milgard balance stamped 26 4 EJ

A home owner from Sacramento says:
My window balance is Milgard stamped 26 4 EJ. Not sure how to translate to your S380-26 options. Thank you.
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Donna from SWISCO responded:
If it is a Series 380 the stamps that have 26 4 many times translate to 2640, however, they are 27" in length, not 26".
First, measure the length of the balance channel, (exclude the fitting in this measure).
Next, remove the window sash and place it on a scale. We need the weight of the window sash in pounds to identify the proper stamp option.

If you are unsure of the balance series you selected, please feel free to send us detailed photos.
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