Product Details Size A4 (210mm x 297mm) Substance 80gsm Brightness 102-104% above Color White Whiteness CIE167 Sheet in Ream 500 Roughness 140ml/Min Thickness 110um Opacity 95% Ream box 5 Ream Quality Very High EXCLLENT PERFORMANCE DUE TO THE FOLLOWING CHARACTERISTICS Moisture Control - Makes the sheets stay flat in the copier and enchances runability. Low Dust Content - Minimizing Your copier runing cost. Good Opacity - Double sided copying of the best quality Smoothness - Improving Printing Quality. Bulky Sheet - Enhancing smooth runnability BEST FOR USE WITH YOUR Photocopier Laser Printer Fax Machine Ink-jet Copier 2 side copying