Concrete rings are manufactured from durable pre-galvanized steel, and are designed to house and protect electrical wiring and to support light fixtures. All steel concrete rings are UL listed and designed to be installed in poured concrete decks. Mounting tabs are used to secure ring to metal or wood forms, leaving box flush with concrete.
- 2-1/2 in. deep
- External ears used to nail ring to the wood form
- Single row of ½ in. and ¾ in. knockouts
- Not recommended for ceiling fan installations
- 21.0 cu. in. capacity
- Used in high-rise construction