AS/NZS 2208, EN 12150, and ASTM C1036 are three widely used standards for flat glass in Australia/New Zealand, Europe, and the United States, respectively. While all three standards cover similar requirements and testing methods, there are some differences in their specifications for dimensions and tolerances.

In general, all three standards specify that flat glass must meet certain dimensional tolerances for thickness, length, and width. They also specify that the surface quality of the glass must meet certain standards to ensure that it is free from defects that could impair its function or appearance.

However, there are some differences between AS/NZS 2208, EN 12150, and ASTM C1036 when it comes to the dimensions and tolerances of flat glass: