The Board of Directors of McGrath RentCorp (NASDAQ:MGRC), a diversified business to business rental company declared a quarterly cash dividend of $0.225 per common share for the quarter ended September 30, 2010. The dividend will be payable on October 29, 2010 to all shareholders of record on October 15, 2010.

ABOUT MCGRATH RENTCORP

Founded in 1979, McGrath RentCorp is a diversified business-to-business rental company. Under the trade name Mobile Modular Management Corporation (Mobile Modular), it rents and sells modular buildings to fulfill customers’ temporary and permanent classroom and office space needs in California, Texas, Florida, North Carolina, Georgia, Maryland, Virginia and Washington, D.C. The Company’s TRS-RenTelco division rents and sells electronic test equipment and is one of the leading rental providers of general purpose and communications test equipment in the Americas. In 2008, the Company purchased the assets of Adler Tank Rentals, a New Jersey based supplier of rental containment solutions for hazardous and nonhazardous liquids and solids with operations today in the Northeast, Mid-Atlantic, Midwest, Southeast, Southwest and West. Also, in 2008, under the trade name TRS-Environmental, the Company entered the environmental test equipment rental business serving the Americas. In 2008, the Company also entered the portable storage container rental business in Northern California under the trade name Mobile Modular Portable Storage, and in 2009 expanded this business into Southern California, Texas and Florida. For more information on McGrath RentCorp and its operating units, please visit our websites:

Corporate – www.mgrc.com

Tanks and Boxes – www.AdlerTankRentals.com

Modular Buildings – www.MobileModularRents.com

Portable Storage – www.MobileModularRents-PortableStorage.com

Electronic Test Equipment – www.TRS-RenTelco.com

Environmental Test Equipment – www.TRS-Environmental.com

School Facilities Manufacturing – www.Enviroplex.com

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