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Brightness
Levels
Comparison
by Manufacturer
Comparison
by Grade
Coated
Web Paper Specification Guide
Coated
Paper Chart
Since paper is routinely sold by the
pound, it is useful to understand how the weight of paper is
expressed. Each grade of paper is available in certain Basis
Weights. Offset Paper, for example, is available in Basis
Weights of 40, 50, 60, 70, 80 and 100 Lb. The Basis Weight is
defined as the number of pounds that 500 sheets of a certain
size weighs. That "certain size" is different for each grade
of paper and is known as the Basis Size. The following chart
shows the Basis Sizes for common Grades:
| Grade
|
Basis Size
|
| Offset & Book
|
25 x 38
|
| Tag or SBS
|
24 x 36
|
| Cover
|
20 x 26
|
| Index
|
25 ½ x 30 ½
|
| Vellum Bristol
|
22 ½ x 28 ½
|
| Office & Writing
|
17 x 22
|
|
