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The Centaur CM-4SB-50/75-EXT is a square box extension ring designed for electrical applications. This steel extension ring has a cubic capacity of 21 cubic inches, making it suitable for various wiring needs. The dimensions include a height of four inches, a width of four inches, and a depth of one and a half inches. It features a drawn construction and includes eight half-inch knockouts and four three-quarter-inch knockouts.
This extension ring allows for easier wire management and installation of electrical connections.
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