McGrath RentCorp is a diversified business-to-business rental company that rents and sells relocatable modular buildings, storage containers, electronic test equipment, and liquid and solid containment tanks and boxes. The Company operates through four business segments: Mobile Modular, TRS-RenTelco, Adler Tanks, and Enviroplex. Mobile Modular rents and sells modular buildings to fulfill customers' temporary and permanent classroom and office space needs in California, Texas, Florida, and the Mid-Atlantic from Washington D.C. to Georgia. TRS-RenTelco rents and sells electronic test equipment and is one of the leading rental providers of general purpose and communications test equipment in North America. Adler Tanks rents and sells containment solutions for hazardous and nonhazardous liquids and solids with operations serving key markets throughout the United States. Enviroplex designs and manufactures modular classrooms for public and private schools in California.