B-Line Eaton series Type 3/3R junction boxes, 30" height, 10" length, 30" width, 3R, Screw cover, RTSC NK enclosure, Surface mounted, Medium single d

Yes, for outdoor use where falling rain is the concern. The 303010 RTSC NK enclosure carries a NEMA 3R rating and includes a rain hood over the cover, so it handles rain, sleet and external ice formation. It is not a washdown or hosedown enclosure, so for direct spray or dust-tight service you want a Type 4 or 12 box instead.

It is built to UL 50, the standard for enclosures for electrical equipment. If your submittal calls for a UL 50 Type 3R screw cover enclosure in painted carbon steel, the 303010 RTSC NK meets that description. It is made in the US, which matters on Buy American and federally funded work.

No. The 303010 RTSC NK is the no-knockout version, so every entry is field drilled or punched where you need it. That is the version most electricians want on a 3R box because you are not fighting unused openings that have to be sealed, but budget time for hole punching and the right rated fittings to keep the 3R rating intact.

Surface mounting through embossed thru holes in the back of the enclosure, so no separate mounting brackets are needed. At 91.4 lb empty it is a two-person lift, and the anchors need to be sized for that plus conductors and any back panel gear. On stud walls, land the fasteners in blocking or unistrut rather than drywall anchors.

It is a screw cover, flanged, held by plated studs and wing nuts. That means you can loosen the wing nuts by hand without a driver, but the cover comes fully off rather than swinging on a hinge. For an enclosure opened daily, a hinged door style is the better pick; for a junction or pull box opened rarely, the screw cover is the cleaner seal.

12 gauge carbon steel with a painted finish in ANSI 61 grey. Twelve gauge is heavy wall for an enclosure this size, which is why it lands at 91.4 lb. Being painted carbon steel rather than stainless, it will want the paint kept intact in coastal or chemical environments; scratches from field drilling should be touched up before the box goes into service.

It is a junction and pull box. The 303010 RTSC NK is a medium single door screw cover enclosure with a plain back, intended for splicing, pulling and terminating rather than housing a load center. A separate back panel is needed if you intend to mount devices or terminal strips inside.

ANSI 61 grey is the standard industrial enclosure grey used across most painted steel electrical gear, so a 303010 RTSC NK will read the same as existing ANSI 61 panels and gutters on the same wall. If your facility standard is a custom color or white, this one will not match.