B-Line Eaton series wiring trough, 8" height, 48" length, 8" width, GRT NK wiring trough, Embossed thru holes, No knockouts, Screw cover, 3R, Steel,

The 8848 GRT NK trough carries a NEMA 3R rating, so it's built for outdoor use where falling rain, sleet and external ice formation are the concerns. It is not a washdown or hose-down enclosure. The steel body is finished in ANSI 61 gray and the cover is held down by a flange plus plated screws, which is what keeps water out along the seam.

No. The NK in the model designation means no knockouts, so every conduit entry has to be field punched or hole sawed to suit the run. That is normally what you want on a 3R application anyway, since you control where the penetrations land and can keep them out of the water path. If you'd rather not drill, order a trough with factory knockouts instead.

It's a screw cover design, not hinged. The cover is captured by a flange and secured with plated screws, so you back the screws out and lift the whole cover off, which gives you the full 48 inch opening to lay conductors in rather than feeding them through. Budget a few minutes per section on re-work; if you're opening the trough often, a hinged cover style suits better.

The 8848 GRT NK is CSA Certified, which is the listing an inspector looks for on Canadian work. Specifiers standardizing across US and Canadian sites often pick this series for exactly that reason.

The manufacturer part number is 8848 GRT NK from Eaton's B-Line series. Read it as 8 x 8 cross section, 48 inch length, GRT screw cover trough, NK for no knockouts. If your spec calls for knockouts or a different length, the base number changes accordingly.

16 gauge steel, painted ANSI 61 gray. That's the usual body gauge for a commercial 8 x 8 wireway and it's what gives the 48 inch section enough rigidity to span between mounting points without oil canning when it's loaded with conductors.