LAKE FOREST, Ill. -- Packaging Corp of America posted higher profit in the second quarter boosted by gains from a real estate sale that helped partially offset costs related to its pending acquisition of Greif containerboard.

The cardboard-box maker on Wednesday posted a profit of $241.5 million or $2.67 per share, up from $198.9 million, or $2.21 a share in the same quarter last year.

Adjusted per-share earnings came in at $2.48, beating analyst expectations of $2.44, according to FactSet.

Revenue rose 4.6% to $2.17 billion, but was short of the $2.19 billion analysts surveyed by FactSet expected.

In the company's packaging unit, total corrugated product shipments were up 1.7% per day and flat overall from a year ago. In Packaging Corp's paper unit, sales volume was down 5% from last year.

Despite consumer caution in July, the company still expects higher corrugated shipments moving forward. The company also forecasts for lower export containerboard sales due to the global trade environment.