Copy Papers a.Premium No. 4 Bond – Virgin: includes 20 lb. and 24 lb. basis weight in various cut sheet sizes. Brightness of 92 and opacity of 86-88. White. Available in three (3) hole drilled, standard 5/16" holes, free from paper hole cut debris. Smooth finish. Acid free. b.Premium No. 4 Bond – Recycled, White and Colors: 30% includes 20 lb. and 24 lb. basis weight in various cut sheet sizes. White paper shall have brightness of xx and opacity of xx Copy papers shall be long grain, carton packed, and ream wrapped in moisture proof paper. Paper should be able to withstand considerable heat without excessive curling for automatic collation. For use in high-speed photocopiers, laser printers and plain paper facsimile machines...