Packaging Corporation of America

Lake Forest, Illinois, USA, 25 August 2006 --(BUSINESS WIRE)-- Packaging Corporation of America (NYSE:PKG) announced today that its board has approved a regular quarterly dividend of USD 0.25 per share on its common stock. The quarterly dividend of USD 0.25 per share will be paid to shareholders of record as of 15 September 2006, with a payment date of 31 October 2006. Future declaration of quarterly dividends, and the establishment of future record and payment dates, are subject to the final determination by PCA's board of directors.

PCA is the sixth largest producer of containerboard and corrugated packaging products in the United States.The company had sales of USD 2.0 billion in 2005. PCA operates four paper mills and 69 corrugated product plants in 27 states across the country.