Envelope Monarch; Envelope #9; Envelope #10- Page 129

APPENDIX   A - 7

Moisture content

Moisture content is the amount of water left in the paper after manufacture. It is one of the important 
characteristics of the paper. This can change greatly depending on the storage environment, although 
usually paper contains about 5% water by weight. Because paper often absorbs water, the amount of 
water can sometimes be about 10% in a high humidity environment. When the amount of water 
increases, the characteristic of the paper changes greatly. The fixing of the toner may become worse. 
For storage of the paper and during use, we recommend that the humidity of the surrounding 
environment is between 50% and 60%.

Rough estimate of basis weight

Paper size

g/m

2

 lb

Bond

Index

60

16

64

17

75

20

90

24

105

28

120

32

135

36

161

43

90

200

53

110

Letter

8.5 

×

 11 in.

Legal

8.5 

×

 14 in.

Executive

7.25 

×

 10.5 in.

A4

210 

×

 297 mm

A5

148 

×

 210 mm

A6

105 

×

 148 mm

Envelope Monarch

3.875 

×

 7.5 in.

Envelope #9

3.875 

×

 8.9 in.

Envelope #10

4.12 

×

 9.5 in.

Envelope #11

4.5 

×

 10.375 in.

Envelope DL

110 

×

 220 mm

Envelope C5

162 

×

 229 mm

Envelope C6

114 

×

 162 mm

Envelope B5 (ISO)

176 

×

 250 mm

Envelope B6

125 

×

 176 mm

Folio

8.5 

×

 13 in.