Stamp Option?

A quick learner from Oakland CA says:
I need to know the correct stamp option for Milgard Window MIL-027-4 series 5220/5270
MST 4-6×7-6
MVT 52"×44"
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Tom from SWISCO responded:

I'm afraid the information given has no bearing on what stamp option to choose. Typically you can just use the original stamp to determine what to pick, but if that's not possible then your only remaining course of action is to weigh your sash on a scale and then refer to the chart we show on the S380-24 store page. 

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