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A4 Size Premium Printer Paper - Great for Printing Professional Documents - 21 lb - 8.3" x 11.7" (100 Sheets, White) 100 Sheets - 21 lb workwarehouse Research Laboratory (ORP-228 Meter+Calibration Powder)A4 Size Premium Printer Paper Great for Printing Professional Documents 21 lb 8. 3" x 11. 7" (100 Sheets, White) High quality moderately bright, white copier papers Consistently smooth papers won't jam in the printer. Double sided thick paper for added worthiness Deliver premium quality color and B&W printouts with details and crispness Extend the duration of photocopy Ideal for copying or printing tasks Certified by TISI Standard. Certified by