B-Line Eaton series Type 3/3R junction boxes, 12" height, 8" length, 12" width, 3R, Hinged cover, RTHC enclosure, Surface mounted, Small single door,

Yes, within the limits of a NEMA 3R rating. The 12128 RTHC is rated Type 3/3R, which covers falling rain, sleet and snow on outdoor surface-mounted work, and it comes with a rain hood over the door. NEMA 3R is not a washdown or hosedown rating, so if the box will see direct spray, water jets or oil, you want a Type 4 or 4X enclosure instead.

The enclosure measures 12 inches high, 12 inches wide and 8 inches deep, so plan for 8 inches of clearance off the wall plus the rain hood and the door swing. It weighs 11.6 lb empty, which a single person can hold to the wall while starting the fasteners.

Mounting is surface, and the back already has embossed thru holes, so you fasten straight through the box into the wall or strut with no drilling and no separate mounting feet. The embossed holes keep the fastener seated without opening a water path into the interior, which is what preserves the 3R rating. Anchors or bolts suit the wall material and are not supplied.

Yes, five knockouts are provided, so for a simple feed-through or tap you may not need to punch anything. If your conduit runs do not land on those locations you will be hole-sawing or punching 16 gauge carbon steel, and any added opening has to be closed with a rated fitting or plug to keep the 3R integrity.

It is built to UL 50, the standard covering enclosures for electrical equipment, which is what an inspector or a spec writer looks for on a junction box body. The enclosure carries a NEMA 3R environmental rating alongside it and is made in the US.

It has a padlock provision on the door, so you can secure it in a public corridor, a rooftop or a tenant space without adding hardware to the enclosure. The padlock itself is not included. The door uses a formed top hinge and the cover is removable, so a technician can take the door off entirely for a large pull rather than working around it.

If the box will be opened more than once, yes. The hinged cover on the 12128 RTHC swings on a formed top hinge, so nobody is holding a 12 by 12 steel plate and loose screws on a ladder, and the door can still be lifted off when full access is wanted. A screw cover box is the cheaper choice for a pull point you expect to seal and never touch again.

The manufacturer part number is 12128 RTHC, an Eaton B-Line RTHC enclosure in the small single door style. The number reads off the dimensions: 12 inch height, 12 inch width, 8 inch depth.

Painted carbon steel in ANSI 61 Grey, the standard grey used across most industrial control gear and panelboards, so it lines up visually with existing switchgear and enclosures on a plant or campus. Steel at 16 gauge means outdoor installs should have any field-cut or scratched surface touched up to stop rust starting at the break.