Donaldson Selected to Provide Boeing 747-8 with New HEPA Cabin Air Recirulation Filter and E/E Cooling Filter


12/18/2007

MINNEAPOLIS, MN -December 18, 2007 - Donaldson Company (NYSE:DCI), a leading, worldwide manufacturer of filtration systems and parts, has been selected by Boeing Company (NYSE: BA) to provide the High Efficiency Particulate Air (HEPA) Cabin Recirculation filter and Electronic Equipment (E/E) Cooling filter for the new Boeing 747-8 Freighter and Intercontinental.

"Donaldson is pleased to be awarded the 747-8 recirculation filter and electronic equipment cooling filter programs," said Sheila Peyraud, General Manager, Aerospace and Defense at Donaldson. "Donaldson values our partnership with Boeing and is excited to be working on the 747-8 program."

Using their advanced technologies and experience in the aviation industry, Donaldson will design, develop, and qualify the HEPA cabin recirculation filter and the E/E cooling filter. When installed, the new HEPA cabin air circulation filter provides higher efficiency and an extended filter life due to its media design. Donaldson HEPA filters meet or exceed 99.97% efficiency on 0.3µm, the highest rating available for aircraft cabin recirculation systems, trapping dust, lint, smoke, bacteria, viruses, spores and other contaminants. The new E/E cooling filter will protect the avionics equipment from contamination, which can cause higher operating temperatures and can lead to equipment malfunction or failure.

Donaldson expects to deliver their first ship set in the last quarter of 2008. For more information, visit the Donaldson Aerospace website at www.donaldson.com/en/aircraft or contact Donaldson toll free at (866) 323-0394.

About Donaldson Company

Donaldson is a leading worldwide provider of air and liquid filtration systems and replacement parts that improve people's lives, enhance our customers' equipment performance and protect our environment. We are a technology-driven company committed to satisfying our customers' needs for diesel engine equipment and industrial filtration solutions through innovative research and development, superior technology, and global presence. Our 12,000 employees contribute to the company's success by supporting our customers at more than 100 sales, manufacturing, and distribution locations around the world.

Donaldson is a member of the S&P MidCap 400 and Russell 1000 indices, and our shares trade on the NYSE under the symbol DCI. Additional information is available at www.donaldson.com.

FROM:

The Carideo Group Inc.
1250 One Financial Plaza
120 South Sixth Street
Minneapolis, Minnesota 55415

FOR:
Donaldson Company, Inc.
P.O. Box 1299
Minneapolis, Minnesota 55440
(NYSE: DCI)

CONTACTS:
Jan W. Drymon
(612) 317-2881
E-mail: jan@carideogroup.com

Janice Kovala
(866) 484-8329
E-mail: janice.kovala@donaldson.com

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