Comfort Systems USA, Inc. provides mechanical and electrical installation, renovation, maintenance, repair, and replacement services for the mechanical and electrical services industry in the United States.

Hubbell Incorporated, together with its subsidiaries, designs, manufactures, and sells electrical and electronic products in the United States and internationally. It operates through two segments, Electrical Solution and Utility Solution.

IES Holdings, Inc. designs and installs integrated electrical and technology systems, and provides infrastructure products and services in the United States.

Kimball Electronics, Inc. provides contract electronics manufacturing services and diversified manufacturing services to customers in the automotive, medical, industrial, and public safety end markets.

Modine Manufacturing Company provides engineered heat transfer systems and heat transfer components for use in on- and off-highway original equipment manufacturer (OEM) vehicular applications.

nVent Electric plc designs, manufactures, markets, installs, and services electrical connection and protection products worldwide. The company operates through three segments: Enclosures, Electrical & Fastening Solutions, and Thermal Management.

Preformed Line Products Company, together with its subsidiaries, designs and manufactures products and systems that are used in the construction and maintenance of overhead, ground-mounted, and underground networks for the energy, telecommunication, cable operator, information, and other industries.

Sterling Infrastructure, Inc. engages in the transportation, e-infrastructure, and building solutions primarily in the Southern United States, the Northeastern and Mid-Atlantic United States, the Rocky Mountain states, California, and Hawaii.