->https://www.912bbs.org/forum/threads...s-codes.61057/

The letter "M" followed by the manufacturer's model number for each different type, thickness, color tint, shade, or construction of the material


The American Standard AS number indicates the permissible position of the window on the vehicle:

(a) AS1. Laminated safety glass marked AS1 is required to be used in the windshield of every motor vehicle except a motorcycle and is acceptable for use anywhere in motor vehicles and campers.

(b) AS2 and AS3. Laminated or tempered safety glass marked AS2 is acceptable for use anywhere in a motor vehicle except in the windshield, and anywhere in a camper. Material marked AS3 has less than 70 percent light transmittance and is acceptable only in areas not requisite for driving visibility.

(c) AS2-26 and AS3-26. Laminated safety glass marked AS2-26 is acceptable for use anywhere in a motor vehicle except the windshield, and anywhere in a camper. Material marked AS3-26 has less than 70 percent light transmittance and is acceptable only in areas not requisite for driving visibility.

(d) AS4 and AS5. Rigid plastic safety glazing material marked AS4 is acceptable for use in interior partitions, auxiliary wind deflectors, folding doors, standee windows in buses, flexible curtains, readily removable windows, openings in roofs, rear windows of soft tops, rear doors of taxicabs, and windows of campers. Material marked AS5 has less than 70 percent light transmittance and is acceptable only in areas not requisite for driving visibility.

(e) AS6 and AS7. Flexible plastic safety glazing material marked AS6 is acceptable for use in the rear windows of soft tops, windshields for motorcycles, flexible curtains, and readily removable windows. Material marked AS7 has less than 70 percent light transmittance and is acceptable only in areas not requisite for driving visibility.

(f) AS8 and AS9. Wire glass marked AS8 is acceptable for use in folding doors, standee and rearmost windows in buses, and windows to the rear of the driver in trucks and truck tractors. Material marked AS9 has less than 70 percent light transmittance and is acceptable only in areas not requisite for driving visibility.

(g) AS10 and AS11. Laminated safety glazing material marked AS10 or AS11 is for use only in armored cars for which permits have been issued under Section 21713 of the Vehicle Code. Bullet-resistant glass marked AS10 is required in the windshields and is acceptable for use anywhere in the vehicle. Bullet-resistant glass marked AS11 is acceptable for use anywhere in the vehicle except the windshield.

(h) Shaded Material. The dividing line in the "AVS1" or "AVS2" markings on shaded glazing material shall be located so that the darker side of the dividing line is outside the areas requisite for driving visibility.