B-Line Eaton series wiring trough, 12" height, 120" length, 12" width, G wireway, Thru holes, 39 top knockouts, 39 bottom knockouts, Screw cover, 1,

No. The 1212120 G trough is a NEMA 1 enclosure, which means general purpose indoor use only. It has a screw cover and knockouts, not a gasketed raintight seal, so keep it out of wash-down areas, exterior walls, and anywhere subject to dripping water. For an outdoor run you need a NEMA 3R raintight trough instead.

It is a screw cover, held on with plated screws along the length. That means full access to the whole 120 inch run once the screws are out, but you are backing out and replacing every screw each time you open it. On a panel feed you re-enter often, a hinged cover trough saves labor; for a trough you fill once and close, the screw cover is the cheaper, more secure choice.

Yes. There are 39 knockouts on the top and 39 on the bottom, so you can land conduit into the trough at spaced intervals without drilling or punching in the field. The sides are not knocked out, so side entries are on you.

It is CSA Certified. For submittal purposes, the other identifying data a spec reviewer will want is the catalog number 1212120 G, 14 gauge steel construction, NEMA 1, and the 12 x 12 x 120 inch size.

It is all about conductor fill and bending room. A 12 x 12 section like the 1212120 G gives you 144 square inches of cross section, which is what you need when you are gathering a lot of large feeders or making bends off a big panel. A 4 x 4 or 6 x 6 handles branch circuit work and control wiring in far less wall space. Ordering too small is the common mistake, because fill limits and the bending radius of large conductors, not the number of wires, decide the size.

14 gauge steel, painted ANSI 61 gray. That is the standard light-gray switchgear shade, so it matches typical panelboards, disconnects, and other gear in an industrial or commercial electrical room. The closure screws are plated.