B-Line Eaton series wiring trough, 4" height, 24" length, 4" width, GTGV NK wiring trough, Thru holes, No knockouts, Screw cover, 1, Galvanized steel

It's a 4 x 4 inch trough, 24 inches long. That 4 by 4 inch inside profile is the standard size for feeder and control wire pulls between panels, and the 24 inch length is the short section used for jogs and jumps rather than long runs. Model number 4424 GTGV NK reads directly off those dimensions.

No. The 4424 GTGV NK is the NK (no knockouts) version, so the body arrives blank and you punch or drill every penetration where you want it. If you need factory openings on centers, you want a knockout version instead. Blank sides are the usual choice when the conduit layout doesn't line up with standard knockout spacing.

No. It's a NEMA 1 enclosure, which is indoor general purpose only, protecting against incidental contact and falling dirt. It is not rated for rain, dripping water, hose down, or corrosive locations. For outdoor or wet locations you need a NEMA 3R or 4 raintight trough with a gasketed cover.

The 4424 GTGV NK carries CSA C22.2 certification, which is the Canadian standard referenced for enclosures and auxiliary gutters, so it is acceptable for Canadian electrical work within its NEMA 1 indoor rating.

No, these are different specs. The 4424 GTGV NK uses a fully removable cover held on by plated screws, which is what most engineered drawings mean by "screw cover" gutter. If the spec calls for a hinged cover so the lid stays captive during service, a screw cover unit won't satisfy it. Screw cover is the more common and more secure of the two where the trough is not opened often.

Body and cover are 16 gauge galvanized steel finished in gray. Galvanized steel handles dry but humid indoor spaces like unheated warehouses, mechanical rooms, and parking structures better than painted-only steel, since the zinc coating protects cut and scratched areas. It is still a NEMA 1 indoor enclosure, so keep it out of direct weather.

The 4424 GTGV NK ships as a trough body with its screw-on cover and plated screws. Connectors, closure plates, end plates, and hangers are separate items, and any conduit openings have to be field punched since this is the no-knockout version. Plan on ordering couplers and any end closures with the sections when you're building a continuous run.

Reading the designation 4424 GTGV NK: the 44 is the 4 by 4 inch cross section, 24 is the 24 inch length, GTGV identifies the screw cover galvanized trough line, and NK means no knockouts. Ordering by that exact string is how you avoid getting a knockout body or a different cover style.