Wausau Paper Introduces ‘Earth-Friendly’ Exact Digital(TM) Printing and Writing Paper

MOSINEE, Wis., Sep 21, 2005 (BUSINESS WIRE) — Wausau Paper (NYSE:WPP) today announced the addition of Exact Digital(TM), an “earth-friendly” line of coated and uncoated digital paper, to its line of printing and writing papers.

Exact Digital high-brightness papers, available in a wide range of sizes and basis weights, are specially formulated for optimal performance in digital printing applications including copiers, inkjet and laser printers, and commercial digital presses. Exact Digital papers are acid-free and lignin-free with all uncoated papers in the Exact Digital line containing an “earth-friendly” 30% post-consumer fiber.

“Our customers indicated a preference for a bright line of digital papers that features a significant recycled fiber content,” stated Thomas J. Howatt, president and CEO. “Exact Digital is designed to meet the demands of today’s digital print applications while delivering the environmental benefits of a product containing 30% post-consumer fiber. Moreover, this new line reflects our key growth strategy of providing value-added products.”

Backed by Wausau Paper’s Performance Guarantee, Exact Digital papers are stocked in all of the company’s regional warehouses, making it available within 24 hours to most locations throughout the United States.

Wausau Paper produces fine printing and writing papers, technical specialty papers, and “away-from-home” towel and tissue products. To learn more about Wausau Paper’s collection of innovative products and services, please visit www.wausaupaper.com.

Safe Harbor under the Private Securities Litigation Reform Act of 1995: The matters discussed in this news release concerning the Company’s future performance or anticipated financial results are forward-looking statements and are made pursuant to the safe harbor provisions of the Securities Reform Act of 1995. Such statements involve risks and uncertainties which may cause results to differ materially from those set forth in these statements. Among other things, these risks and uncertainties include the strength of the economy and demand for paper products, increases in raw material and energy prices, manufacturing problems at Company facilities, and other risks and assumptions described in Item 1 of the Company’s Form 10-K for the year ended December 31, 2004. The Company assumes no obligation to update or supplement forward-looking statements that become untrue because of subsequent events.

SOURCE: Wausau Paper

Wausau Paper Scott P. Doescher, 715-693-4470