B-Line Eaton series Type 1 junction boxes, 18" height, 6" length, 12" width, 1, Screw cover, SC enclosure, Surface mounted, Medium single door, 9 sid

No. The 18126 SC carries a NEMA Type 1 rating, which is indoor use only and offers no protection against water, dust ingress or corrosive conditions. Use it in dry indoor mechanical rooms, electrical closets, back-of-house and ceiling spaces. For an exterior wall, a parking deck, or anywhere it can be hosed down or rained on, you need a NEMA 3R or 4 enclosure instead.

It measures 18 inches high, 12 inches wide and 6 inches deep. The 6 inch depth is what usually decides the job, it gives room for splices, larger conductors and bending space behind the cover. Weight is 13.5 lb, so a single installer can hang it on a wall without help.

Knockouts are already provided: 9 on the sides, 5 on the top and 5 on the bottom. That covers most feed-through and gutter-style runs without pulling out a punch set. If your conduit entry does not line up with one of them, you can still drill or punch the 16 gauge carbon steel wall.

It is built to UL 50, the standard covering enclosures for electrical equipment. That, with the NEMA Type 1 rating, is what inspectors typically look for on an indoor junction or pull box.

It is a surface mount enclosure with thru holes in the back pan, so it bolts or screws flat to a wall, a plywood backboard or Unistrut. The thru holes are punched at the factory; the anchors or fasteners suited to your substrate are a separate buy, as is any back panel if you plan to mount components inside.

A screw cover box like the 18126 SC is the right pick where the enclosure is a pull point or splice point you rarely open. The cover lifts off entirely and fastens with plated screws, and keyhole slots on the cover let you back the screws out partway and slide the cover off rather than juggling loose hardware overhead. If the box holds controls, breakers or anything you service regularly, a hinged door version is easier to live with.

The catalog number reads off the dimensions: 18126 SC is 18 high by 12 wide by 6 deep, SC for screw cover. Order by that part number to get this exact size. B-Line builds the same SC family in other dimensional combinations, so if 18 x 12 x 6 is not your size, the number you want follows the same height-width-depth pattern. Country of origin is the US.

Painted carbon steel in ANSI 61 grey, the standard grey used across most commercial electrical gear, so it sits alongside panels and control enclosures without looking out of place. The paint is on the steel body, and the cover screws are plated.