A single sheet of GLARE may be referred to using the naming convention . The number of aluminum layers is always one more than the number of glass fiber layers, and the aluminum layer thickness is in millimeters, which can range from . (GLARE1 can only consist of aluminum layers of thickness, though.) For example, GLARE4B-4/3-0.4 is a GLARE sheet with a GLARE4 grade (using the B variant) where there are four aluminum layers and three glass fiber layers, and the thickness of each aluminum layer is . (In contrast, a typical sheet of photocopy paper is 0.097 mm (0.004 in; 4 mils) thick, while a typical business card is 0.234 mm (0.009 in; 9 mils) thick.)