Book paper: 25 x 38  Weight per ream (in lbs)

50

60

70

80

100

120

Approx. Thickness

Coated Book

.003

.0035

.004

.0055

.006

Eng. Fin.

.0031

.0036

.0042

.0048

Offset

.0035

.004

.0048

.0055

.0075

.009

Text

.0065

.007

Cover Paper: 20 x 26  Weight per ream (in lbs)

50

60

65

80

90

100

120

Approx. Thickness

Uncoated

.007

.009

.0105

.013

.0145

.018

Coated

.006

.007

Printing Bristol: 22.5 x 28.5  Weight per ream (in lbs)

57

67

80

100

Approx. Thickness

Vellum

.0077

.009

.01075

.0135

Index: 25.5 x 30.5  Weight per ream (in lbs)

90

110

140

Approx. Thickness

.0075

.0095

.012

Tag: 24 x 36  Weight per ream (in lbs)

100

125

150

175

200

250

Approx. Thickness

.007

.0095

.011

.0125

.015

.0185

R.R. Board, Blanks, Sign Board: 22 x 28  Weight per ream (in lbs)

2-ply

3-ply

4-ply

5-ply

6-ply

8-ply

10-ply

12-ply

14-ply

Approx. Thickness

.012

.015

.018

.021

.024

.030

.036

.042

.048

To obtain caliper if ply is known:                                                    To obtain ply if caliper is known:   
(3 x ply) + 6 = caliper                                                                      (Caliper – 6)/3 = ply

Business Paper: 17 x 22  Weight per ream (in lbs)

9

13

16

20

24

28

32

36

Approx. Thickness

Bond

.002

.0025

.004

.005

Mimeo

.004

.005

.006

Duplicator

.004

.005

.00525

.00575

Ledger

.0045

.005

.006

.0065

.0075