B-Line Eaton series wiring trough, 8" height, 12" length, 8" width, GRTGV NK wiring trough, Embossed thru holes, No knockouts, Screw cover, 3R, Galva

It is built to NEMA 3R, so it is rated for outdoor use against falling rain and formation of ice. The body is galvanized steel in gray with a screw-on cover held by a flange and plated screws, which is what keeps water out of the top of the box. It is not a washdown or dust-tight enclosure, so for hosedown or heavy dust locations you want a 4 or 4X type instead.

No. The NK in 8812 GRTGV NK means no knockouts, so every conduit entry has to be punched or hole sawed in the field wherever your run needs it. That is usually what you want on a gutter, since it lets you place entries to match the raceway instead of working around factory locations, but plan on a knockout punch set on the truck. If you would rather have the openings already there, order the knockout version of the GRTGV series instead.

8 inches high by 8 inches wide with a 12 inch length, so it is a short 8x8 gutter section rather than a full length run. At 16 gauge steel it weighs about 9.573 lb, light enough for one person to hold up while landing the mounting screws.

Mounting is through embossed thru holes in the back of the enclosure, so it screws or bolts straight to a wall, backboard, or strut channel. Fasteners are not part of the trough, so pick anchors to suit the surface and support the roughly 9.573 lb empty weight plus the conductors you are filling it with.

Screw cover. The lid seats on a flange and is secured with plated screws, which means you are backing out fasteners every time you open it. For a junction point you rarely enter that is fine and it keeps the 3R rating; if the gutter is somewhere you will be pulling into repeatedly, a hinged cover version is easier to live with.

It is built to CSA C22.2, the Canadian standard series for electrical enclosures, which matters if the job is being inspected in Canada or the spec calls for CSA-recognized gear.

16 gauge galvanized steel is standard commercial trough construction and holds its shape when you are pulling conductors through an 8 by 8 opening. The galvanizing plus the gray finish is what gets it to the 3R outdoor rating rather than a painted indoor-only box.