B-Line Eaton series wiring trough, 8" height, 36" length, 8" width, GRT NK wiring trough, Embossed thru holes, No knockouts, Screw cover, 3R, Steel,

It's built to NEMA 3R, so it's rated for outdoor use against rain and falling water, not for washdown or dust-tight indoor applications. The steel body is finished in ANSI 61 gray and the cover seats against a flange held by plated screws, which is what keeps water out of the top. For a wet-location or dust environment you want a 4 or 12 rated enclosure instead.

No. The NK in the model designation means no knockouts, so every conduit entry has to be field-punched or hole-sawed where you want it. That's the usual choice on a 3R trough because you only open the holes you actually use and you control where water can get in. If you want factory knockouts, order the knockout version of the same size rather than this one.

It mounts through embossed thru holes in the back of the enclosure, so you fasten it directly to the wall, backboard, or strut with your own hardware. The embossed holes keep the fastener heads off the sheet metal surface. Mounting screws, anchors, and any strut or channel are supplied by the installer.

Screw cover. The cover is held secure by a flange and plated screws, which means you back out the screws to open it for pulling or splicing, rather than swinging a hinged lid. Plan for tool access along the full 36 inch length and somewhere to set the cover while you work.

The 8836 GRT NK is CSA Certified, which is the listing most specifiers and inspectors look for on a wireway or auxiliary gutter in Canada and is widely accepted on US commercial work. Pair that with the NEMA 3R rating when the run is exposed outdoors or in an unheated area.

Yes, troughs of the same 8 x 8 inch cross section butt together end to end to extend a run, which is how you get past 36 inches. You'll be cutting the connecting openings yourself since this version ships with no knockouts, and any connectors, closing plates, or hangers are separate items.