Dimensional Tolerances Of Acrylic Panels 
In order to maximize their structural strength, provide acceptable optical performance and minimize difficulties during installation, the acrylic panels shall meet the following dimensional tolerances:
- The flatness of each viewing surface on a rectangular plane shall have a tolerance of 0.002 x L, where "L" is the length of the window.
- The length and width of each plane window shall be within 6 mm of specified nominal dimensions.
- The thickness of the panel shall be within ±12mm of the nominal thickness.
- The sharp corners on the edges of all windows shall have a chamfer incorporated to prevent chipping during shipping and installation. The width of the 45 degree chamfer shall not exceed 1.25 mm for every cm (centimeter) of thickness or 13 mm maximum.
