McGrath RentCorp is a diversified business-to-business rental company. The Company operates through four business segments: modular building and portable storage segment (Mobile Modular); electronic test equipment segment (TRS-RenTelco); a subsidiary providing containment solutions for the storage of hazardous and non-hazardous liquids and solids segment (Adler Tanks), and a subsidiary classroom manufacturing business selling modular buildings used primarily as classrooms in California (Enviroplex). The Mobile Modular business segment includes Mobile Modular Portable Storage division. As of December 31, 2016, the Company's TRS-RenTelco rented and sold electronic test equipment nationally and internationally from three facilities located in Grapevine, Texas (the Dallas facility), Dollard-des-Ormeaux, Canada (the Montreal facility) and Bangalore, Karnataka, India (the Bangalore facility). Adler Tanks purchases tanks and boxes from various manufacturers located throughout the country.