Manufactured from durable pre-galvanized steel. Designed to add additional cubic capacity to an electrical box. UL listed and acceptable for use in 2-hour fire rated walls. Device mounting holes pre-tapped to accept 6-32 device screws.
- Popular for exposed work applications
- Key holes provided for ease of installation
- Supplied with 8-1/2 in. knockouts
- 13.0 cu. in. capacity
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