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The Steel City 551511/2-25 is a 4-inch octagon box extension ring. It has a depth of one and a half inches and a cubic capacity of 15.8. This extension ring includes knockouts, making it suitable for various electrical installations.
This extension ring is designed to enhance the installation of electrical boxes in various settings, ensuring secure and efficient connections.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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