Jun 25, 2007. /Lesprom Network/. NewPage Corporation, the largest coated paper manufacturer in North America, expands the Sterling Ultra grade offering to include 7, 8 and 9pt. gloss sheet-fed caliper covers manufactured with 10% post-consumer fiber. Applications for Sterling Ultra sheet-fed caliper products include: - 7pt. - Ideal for all business reply card applications making it easy for customers to reply to offers. - 8pt. - Provides comparable bulk for less money than conventional covers. - 9pt. - Ideal for direct mail postcard applications where added bulk is desired, but not at an increased postage rate. NewPage Corporation, headquartered in Dayton, Ohio, is a leading U.S. producer of coated papers in North America. The company produces Premium Number One sheet-fed to Number Four web, C1S and digital coated papers offering design flexibility for a wide array of end uses.