B-Line Eaton series Type 1 junction boxes, 12" height, 6" length, 12" width, 1, Screw cover, SC NK enclosure, Surface mounted, Small single door, No

No. The 12126 SC NK is a NEMA Type 1 enclosure, which is indoor use only, protecting against incidental dust and contact with the enclosed wiring. It gives no protection against water, so keep it out of wash-down areas, exterior walls, and damp mechanical rooms. For a wet or outdoor location you need a Type 3R, 4, or 4X enclosure instead.

It is 12 inches high, 12 inches wide, and 6 inches deep. That 6 inch depth is what gives you room for wire bending and splices behind the cover, and it is the number to check against your available wall clearance before you order.

The 12126 SC NK is a no-knockout box, which is exactly what the NK in the model designation means. Every conduit entry gets punched or drilled on site, wherever your runs land. That is the reason a lot of electricians prefer it over a pre-punched box, but plan on a hole punch or step bit and the right connectors as part of the job.

It is a screw cover, not a hinged door, so the cover lifts off completely once the screws are out. B-Line puts keyhole slots on the cover and uses plated screws, so you back the screws out part way and slide the cover off rather than chasing loose hardware into the box. Handy on a ladder, but it does mean the cover is fully removed while you work.

It is a surface mount enclosure with thru holes in the back pan for fasteners. You supply the anchors or screws suited to your substrate, whether that is concrete, block, drywall with backing, or Unistrut. The box is 10 pounds empty, so on hollow wall you want the fasteners hitting framing or proper toggle anchors, not just board.

Carbon steel, 16 gauge, painted ANSI 61 grey. Sixteen gauge is the usual commercial and industrial weight for a box this size, so it takes conduit entries and holds shape better than a light-gauge or nonmetallic box. Being steel, it also bonds as part of the equipment grounding path when you land conduit on it.

It is certified to UL 50, the standard for enclosures for electrical equipment, and country of origin is the United States. The UL 50 certification is the line item most inspectors and spec writers are looking for on a junction box submittal.

Order Eaton B-Line catalog number 12126 SC NK. The number reads as the box size first, 12 by 12 by 6, then SC for screw cover and NK for no knockouts. Get the suffix right, because the same 12126 body is also built in knockout and hinged configurations.

The finish is painted ANSI 61 grey, which is the standard industry grey used across most switchgear, panelboards, and industrial enclosures. If your existing gear is ANSI 61, this will read as the same colour on the wall, which matters for facilities standardizing a whole room or building.