18X18X6 NO KNOCKOUTS

Definition Junction Box

An enclosure of other than cast metal designed to house, mount, and protect, but does not include wiring connections or electrical device(s) such as terminals and/or terminal boards, switches, jacks, fuseholders, connectors, circuit breakers and the like. It is designed for and may include a cover and such accessories as mounting hardware, brackets, locks, clamps, mounts and conduit fittings. Excludes conduit outlet; and chamber, cable terminal. For boxes which include electrical device(s) such as terminals and/or terminal boards, switches, fuseholders, jacks, connectors, circuit breakers and the like, or combinations thereof, see switch box; fuze box; jack box; terminal box; circuit breaker box; and distribution box. For boxes wired to provide the interconnecting facilities for a specific major group of electronic items outside of the box, see interconnecting box. See also interconnecting cabinet.