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The Multiple 4 Square Extension Drwn, MPN 187, is designed for electrical applications. This extension ring offers a depth of one and one-half inches and includes multiple knockout options. It is suitable for attachment to switch boxes and is made from durable pre-galvanized steel.
This device effectively increases the cubic capacity of electrical boxes, making it ideal for residential and commercial installations.
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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