B-Line Eaton series wiring trough, 8" height, 72" length, 8" width, GTGV NK wiring trough, Thru holes, No knockouts, Screw cover, 1, Galvanized steel

No. The NK in the model designation means no knockouts, so the body and cover come blank. You drill or punch your own conduit entries wherever the job needs them, which is the usual choice when equipment locations vary. If you want factory knockouts on a set spacing, you need the knockout version instead of the NK.

No. The 8872 GTGV NK is a NEMA 1 enclosure, which is indoor, dry location only, general purpose protection against incidental contact and falling dirt. For a rooftop, a loading dock, or a washdown area you need a NEMA 3R or 4 rated trough, not this one.

It's a screw cover, held on with plated screws all the way around. That means you back out every screw to open a section rather than flipping a hinged lid, so plan on a driver and two hands when you're pulling conductors. The tradeoff is that nothing rattles loose and the cover stays put in a vibrating equipment room. The whole assembly weighs 45.33 lb, so set the screws on the top face where you can reach them once it's mounted.

Mounting is through holes in the back of the trough, so you fasten it directly to the wall, to backing, or to strut with your own hardware. Sized fasteners and anchors are not part of the trough, so count them into your material list. At 45.33 lb empty, pick anchors for the substrate you're hitting and support a 72 inch run at both ends rather than at one point.

It is built to CSA C22.2, so it carries the Canadian standard reference an inspector north of the border will look for on a wireway. Cite the 8872 GTGV NK model number on the submittal along with the NEMA 1 indoor rating.

The part to specify is Eaton B-Line 8872 GTGV NK. The 88 is the 8 by 8 inch cross section, the 72 is the length in inches, and NK tells you it's the blank, no knockout version with a screw cover. If the sections already on the wall have punched knockouts or a hinged cover, this is not the same part and you'll want the matching variant instead.