B-Line Eaton series Type 3/3R junction boxes, 18" height, 8" length, 12" width, 3R, Screw cover, RTSC enclosure, Surface mounted, Medium single door,

Yes. The 18128 RTSC carries a NEMA 3R rating, which covers outdoor use against falling rain, sleet and external ice formation. It ships with a rain hood and plated screws for that service, and the shell is painted carbon steel in ANSI 61 grey. It is not a washdown or hosedown enclosure, so for direct spray or dust-tight duty you want a Type 4 or 12 box instead.

18 inches high, 12 inches wide and 8 inches deep. That 8 inch depth is what decides most jobs, since it sets how much room you have behind the cover for gutter space, wire bending radius and any DIN rail or panel you drop in. The box weighs 15.5 lb empty, so a single person can set it on a wall.

Five knockouts are provided in the bottom of the box. There are no factory openings called out on the sides, top or back, so any side or back entries are yours to punch in the field. Bottom entry is the usual approach on a 3R enclosure anyway, since it keeps water out of the conduit runs.

It is a screw cover, not a hinged door. The flanged cover lifts off completely once the plated screws are backed out, which gives full access to the interior but means you are handling a loose cover on a ladder. If crews need to get in frequently, a hinged-cover 3R enclosure is the better choice; a screw cover suits pull points and terminations that get opened rarely.

Surface mount, using embossed thru holes in the back of the box. The embossed pattern keeps the box standing off the mounting surface so water can drain behind it, which is why it works on an exterior wall. Anchors and fasteners are sized to your substrate and are not part of the enclosure.

The body is 16 gauge carbon steel with a painted ANSI 61 grey finish, and the cover screws are plated to resist corrosion at the one place water sits. That is standard commercial-duty construction for a 3R box. In coastal or chemical environments where painted steel will eventually rust through, a stainless or non-metallic 3R enclosure is the longer-lived answer.

Order Eaton B-Line model 18128 RTSC. The designation reads off the size: 18 high, 12 wide, 8 deep, with RTSC identifying the rain-tight screw cover enclosure. It is made in the US.

The finish is ANSI 61 grey, the standard painted grey used across most industrial enclosure and switchgear lines, so it lands alongside existing gear rather than standing out. For a facility standardizing on one look across multiple buildings, that is the color to spec.