Exhibit 99.1


                McGrath RentCorp Announces Management Promotions


     LIVERMORE, Calif.--(BUSINESS WIRE)--March 20, 2006--McGrath RentCorp
(Nasdaq:MGRC), a leading rental provider of modular buildings for classroom and
office space, and test equipment for general purpose and communications needs,
announced the appointment of Keith Pratt to the position of Chief Financial
Officer, effective March 17, 2006. The Company also announced the appointment of
David Whitney to the position of Vice President and Principal Accounting
Officer, effective as of the same date.
     "In keeping with our CFO transition plans, we are very pleased to announce
the appointment of Keith Pratt as Chief Financial Officer," said Dennis C.
Kakures, CEO and President. "Additionally, with great pleasure we announce David
Whitney, our Corporate Controller since 2000, has been promoted to Vice
President, Controller and Principal Accounting Officer as a result of his
outstanding work and technical competence."
     Mr. Pratt joined McGrath RentCorp in January 2006 and most recently was
with Advanced Fibre Communications (AFC), a public telecommunications equipment
company in Petaluma, California, where he served as Senior Vice President and
Chief Financial Officer. Mr. Pratt served as CFO from 1999 until AFC was
acquired by Tellabs, at the end of 2004. He also served as Director of Corporate
Development at AFC prior to becoming CFO. Prior to Mr. Pratt joining AFC, he
served as Director, Strategy & Business Development Group at Pacific Telesis.
Mr. Pratt has an undergraduate degree from Cambridge University in Production
Engineering and an MBA from Stanford University.
     Mr. Whitney joined McGrath RentCorp as its Corporate Controller in 2000.
Previously he was Manager of Regional Accounting for The Permanente Medical
Group in Oakland, California. Mr. Whitney holds a BS in Accounting from
California State University at Hayward, and is a Certified Public Accountant.
     Thomas Sauer, who previously announced his plan to retire as CFO, will be
working on a part-time basis through the end of 2006. Mr. Sauer will provide
support to the financial management team and various strategic planning efforts.

     About McGrath RentCorp:

     Founded in 1979, the Company, under the trade name Mobile Modular
Management Corporation, rents and sells modular buildings to fulfill customers'
temporary and permanent space needs in California, Texas and Florida. Mobile
Modular believes it is the largest provider of relocatable classrooms for rental
to school districts for grades K-12 in California. The Company's TRS-RenTelco
division rents and sells electronic test equipment and is one of the leading
providers of general purpose and communications test equipment in North America.
     For more information on McGrath RentCorp, visit www.mgrc.com.


    CONTACT: McGrath RentCorp
             Dennis Kakures, 925-606-9200