B-Line Eaton series Type 1 junction boxes, 24" height, 4" length, 18" width, 1, Screw cover, SC NK enclosure, Surface mounted, Medium single door, Th

No. The 24184 SC NK carries a NEMA Type 1 rating, which is indoor use only, for protection against incidental contact with the enclosed equipment and falling dirt. It offers no protection against rain, hose-down, dust ingress, or corrosive environments. For a loading dock, rooftop, or wet process area you need a Type 3R, 4, or 4X enclosure instead.

It measures 24 inches high, 18 inches wide, and 4 inches deep. That 4 inch depth is the thing to check first: with conduit hubs and pulled conductors, a 4 inch back box gets tight fast on larger cable. Confirm your bend radius and wire fill before committing.

The 24184 SC NK is a no-knockout box. The NK in the model designation means the walls come blank so you punch conduit entries exactly where your runs land. Plan on a knockout punch set sized to your conduit trade sizes; through a 16 gauge carbon steel wall, a hydraulic or ratchet punch is the practical tool, not a hole saw.

Surface mounted with thru holes in the back panel, so anchors go straight through the enclosure into the wall. That is the fast method, but the fasteners pass into the wiring space, so use pan or truss heads and keep conductors clear of them. Anchors and screws are not part of the enclosure; supply them to suit your substrate, whether that's masonry, drywall with toggles, or unistrut.

It is built to UL 50, the standard covering enclosures for electrical equipment. Paired with the Type 1 rating, that's the spec an inspector looks for on an indoor surface mounted pull or junction box.

Order it as B-Line 24184 SC NK. The number reads straight off the dimensions: 24 inch height, 18 inch width, 4 inch depth, SC for screw cover, NK for no knockouts.

Painted carbon steel in ANSI 61 grey, the standard grey used across most commercial electrical enclosures and switchgear. If the other boxes and panels in the building are ANSI 61, this drops in without looking like an afterthought. It is made in the US.

The 24184 SC NK uses 16 gauge carbon steel throughout, which is the usual body weight for Type 1 screw cover boxes in this size range and holds its shape when you punch conduit entries and hang multiple runs off one side. In a mechanical room or plant where the box could take a forklift or cart hit, mount it clear of traffic paths rather than relying on wall thickness.