- For lighting electrical distribution boxes and control boxes with a size greater than or equal to 600mm, 2. 5mm thick cold-rolled steel plates should be used. It is also called a back panel, subpanel, mounting board, or mounting backplate depending on the market and enclosure style. Technical cutaway view of an. Metal adaptable boxes provide strong and versatile enclosures for housing electrical connections, junctions, and components. Material: 2 mm galvanized steel. Constructed from high-quality cold-rolled steel and finished with a durable powder coating, this enclosure provides excellent protection against. Concrete Box Cover Plate, 4 Inches, 3-1/2 Inch and 2-3/4 Inch Knockouts, Pre-Galvanized Steel, No Stud and Thread Size 3/8-18NPS For more info visit: electrification.
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