United Rentals, Inc., through its subsidiaries, operates as an equipment rental company. It operates in two segments, General Rentals and Specialty. The General Rentals segment rents general construction and industrial equipment includes backhoes, skid-steer loaders, forklifts, earthmoving equipment, and material handling equipment; aerial work platforms, such as boom and scissor lifts; and general tools and light equipment comprising pressure washers, water pumps, and power tools for construction and industrial companies, manufacturers, utilities, municipalities, homeowners, and government entities. The specialty segment rents trench safety equipment consists of trench shields, aluminum hydraulic shoring systems, slide rails, crossing plates, construction lasers, and line testing equipment for underground work; power and heating, ventilating, and air conditioning equipment, such as portable diesel generators, electrical distribution equipment, and temperature control equipment; fluid solutions equipment for fluid containment, transfer, and treatment; surface protection mats; and mobile storage equipment and modular office space.