B-Line Eaton series Type 1 junction boxes, 18" height, 4" length, 18" width, 1, Screw cover, SC NK enclosure, Surface mounted, Medium single door, No

No. The 18184 SC NK carries a NEMA Type 1 rating, which is indoor use only, for protection against incidental contact and falling dirt. It does not seal against water, dust, oil or corrosive vapors. For a washdown area, a rooftop, a parking garage or any location exposed to rain, you need a NEMA 3R, 4 or 4X enclosure instead.

It is 18 inches high by 18 inches wide with a 4 inch depth, so you get a square 18 x 18 back panel area and a shallow 4 inch cavity. That depth is the number to check first: wire bending space and any device or terminal blocks you mount inside have to live within 4 inches behind the screw cover.

No knockouts. The 18184 SC NK is an NK (no knockout) box, so every conduit entry has to be punched or drilled in the field. Plan on a knockout punch set sized for your conduit trade sizes, plus connectors and locknuts, since none are included. If you want factory openings, order a knockout version instead.

Surface mounting through holes in the back of the enclosure, so it lands flat on a wall, column or structural backing with your own anchors or machine screws (fasteners are not supplied). It is not designed to be recessed into a finished wall. The cover also has keyhole slots, which let you hang the cover on partially backed out screws while you line it up, useful when you are working overhead alone. At 15.8 lb empty, plan anchors for the box plus whatever wiring and components go inside.

It is a screw cover, a flat removable plate secured with plated screws rather than a hinged door. That suits a pull box or splice point you rarely open. If technicians need frequent access to controls or terminals, a hinged cover enclosure is the better choice, because a screw cover means handling loose screws and a loose panel on a ladder every time.

The 18184 SC NK is built to UL 50, the standard for enclosures for electrical equipment, and is rated NEMA Type 1. It is made in the US. For an inspector, the relevant limits are the Type 1 indoor-only rating and the fact that all conduit openings are field made, so your knockouts and connectors have to be appropriate for the location.

Order B-Line (Eaton) model 18184 SC NK. The number reads as the dimensions, 18 high by 18 wide by 4 deep, followed by SC for screw cover and NK for no knockout. That is the only configuration under this model, so there are no finish or size options to specify.

The 18184 SC NK is a medium single door style enclosure with a flat 18 by 18 inch back area, which is enough room for terminal strips or a panel. Depth is the constraint at 4 inches, so anything deep bodied, contactors, breakers on a deep DIN rail, or drives, will not clear the screw cover. Any interior panel and its mounting studs are separate items, not supplied with the box.