McGrath RentCorp is a business-to-business rental company in North America. The Company operates through four segments: Mobile Modular, Portable Storage, TRS-RenTelco and Enviroplex. Mobile Modular segment provides modular buildings in the United States. It provides prefabricated customizable modular buildings, mobile office trailers, portable classrooms, portable sales office buildings, prefab restrooms and more for rent, lease and sale. Portable Storage segment’s rental inventory is comprised of steel containers, which are used to provide a temporary storage solution that is delivered to the customer’s location. TRS-RenTelco segment rents and sells general purpose and communications test equipment. TRS-RenTelco segment’s general purpose test equipment rental inventory includes oscilloscopes, amplifiers, analyzers (spectrum, network and logic), signal source and power source test equipment. Enviroplex segment manufactures modular buildings used primarily as classrooms in California.