Alenco single hung glass thickness

A quick learner from Alabama says:
Can you tell me the thickness of the insulated glass that Alenco used in their single hung aluminum windows. I am guessing 5/8".
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Paul from SWISCO responded:
Alenco used a variety of glass thicknesses from 1/2" to 7/8". You need a glass caliper like our 75-051 to determine thickness, or remove the glass and measure it that way.
75-051 : Glass Caliper, Fractional
Glass Caliper, Fractional
SWISCO 75-051 Glass Caliper
SWISCO 75-051 Glass Caliper
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