letter size copy paper

Basic weight: 70 , 75 ,80g/m2,

Size : 70 ,75,80GSM 8.5*11,A4,8.5*13,A3,11*17, and foolscap paper sheet is 17 x 13.5inches

(432x343 mm) .

Moisture 3.5%-4.5%,

Whiteness: >98%

Thickness: 103-110 um

Surface roughness TS ml/min: 75-175

Surface roughness BS ml/min: 100-200

Bending stiffness MD: >110 Mn

Bending stiffness CD: >50 Mn

Opacity: >94%

Brightness: 101-104%

CIE whiteness: 148-15

Cobb Test: 27-33 g/m2 27-33