B-Line Eaton series Type 1 junction boxes, 24" height, 10" length, 18" width, 1, Screw cover, SC enclosure, Surface mounted, Medium single door, 9 si

The Eaton B-Line 241810 SC measures 24 inches high, 18 inches wide, and 10 inches deep. That 10 inch depth is what usually decides the job: it gives room for wire bending space and gutter behind a mounted plate, but it also means the box stands 10 inches off the wall once surface mounted. Check your clearance to door swings, conduit runs, and walkways before committing.

No. A NEMA Type 1 enclosure is for indoor use only, giving protection against incidental contact and falling dirt, with no rating against water, dust, oil, or corrosion. If the box goes outside, in a parking garage, a mechanical room with hose-down cleaning, or anywhere subject to rain or wash water, you need a NEMA 3R, 4, or 4X enclosure instead. The 241810 SC is a painted carbon steel indoor box.

Knockouts are already provided: 9 on the sides, 5 on the top, and 5 on the bottom. For most pull-box and gutter work that means no hole punching on site. If your conduit layout does not line up with the factory knockouts, you will be punching or drilling the 16 gauge carbon steel body yourself.

It is a surface mount enclosure with thru holes in the back pan, so you fasten it directly through the box into the wall or a strut rack. The anchors or bolts are selected to suit your substrate and are not part of the enclosure. At 31 pounds empty, plan your fasteners for the loaded weight once conduit and conductors land on it, and back into blocking, masonry anchors, or strut rather than drywall alone.

The 241810 SC uses a screw-on cover, meaning the cover lifts fully away once the plated screws are out. That is the right choice for pull boxes, junction points, and terminal housings you open rarely, and it gives you full unobstructed access to all four corners when you do. If the box houses controls, breakers, or anything an operator or technician needs to get into routinely, a hinged door enclosure is the better pick, since a screw cover has to be supported and re-screwed every time. The cover here does have keyhole slots, so it can be hung on partly backed-out screws during wiring rather than set on the floor.

Yes. The enclosure is built to UL 50, the standard covering enclosures for electrical equipment, and it carries a NEMA Type 1 rating. It is manufactured in the US, which matters if your project carries domestic sourcing requirements on electrical materials.

The finish is ANSI 61 grey paint, which is the standard grey used across most commercial electrical enclosures and switchgear, so it generally reads as a match alongside existing panels and gutters in a mechanical or electrical room. If your building was standardized on a white or custom colour, it will not match.

For a 24 by 18 by 10 inch Type 1 box, 16 gauge carbon steel is the normal commercial construction and it holds its shape when conduit is landed on the sides and top. The screws are plated to resist corrosion at the cover joint. Where the box will take repeated impact, vehicle traffic, or corrosive atmosphere, step up to a heavier or stainless enclosure with a sealed rating instead.