Packaging Corporation of America Schedules Conference Call to Discuss Third Quarter 2008 Results

For access to the conference call on October 21st, please dial (866) 847-7864 (U.S. and Canada) and (703) 639-1430 (International) by 9:45 a.m. (Eastern Time). The conference call leader will be Paul Stecko.

A replay of the call will also be available from 1:00 p.m. (Eastern Time) on October 21, 2008 until 11:59 p.m. (Eastern Time) on November 4, 2008. To access the recording, please dial (888) 266-2081 (U.S. and Canada) and (703) 925-2533 (International). The passcode is 1292018.

This call will be webcast by CCBN and can be accessed at PCA's website at: www.packagingcorp.com.

PCA is the fifth largest producer of containerboard and corrugated packaging products in the United States with sales of $2.3 billion in 2007. PCA operates four paper mills and 67 corrugated product plants in 26 states across the country.

SOURCE: Packaging Corporation of America

Packaging Corporation of America Barbara Sessions INVESTOR RELATIONS: (877) 454-2509 PCA Web Site: www.packagingcorp.com