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The "AS-1" mark is the lower limit of the colored tint on a "tinted windshield". The UV layer can extend all the way to the cowl, but the tint fades to clear at the AS line, thus the "eyebrow" effect.
The "AS-1" mark is the lower limit of the colored tint on a "tinted windshield". The UV layer can extend all the way to the cowl, but the tint fades to clear at the AS line, thus the "eyebrow" effect.