B-Line Eaton series wireway, 6" height, 60" length, 6" width, 3RAHS NK wireway, Embossed thru holes, No knockouts, Hinged cover, 1, Aluminum, Hinged,

No. The 6660-3RAHS NK is a NEMA 1 enclosure, which is indoor only and protects against incidental contact and falling dirt. It's not rated for rain, sleet, hose-down, or wet locations. For an outdoor run you need a 3R or 4X rated trough instead.

No knockouts. The 6660-3RAHS NK ships blank, so every conduit entry has to be field-drilled or punched where you want it. Good if you're laying out your own entries, extra work if you were counting on factory KOs.

It's a hinged cover, so it swings open in place without pulling the cover off or losing screws in the ceiling. The cover is secured to the body with a gasketed retaining stainless steel screw, so there's one fastener to back off before it swings. Handy on long horizontal runs where you're pulling and re-pulling conductors.

Aluminum is the pick where weight matters on a long overhead run or where you want corrosion resistance in a damp-ish but still indoor space, like a mechanical room or a plant floor. This one is aluminum finished in ANSI 61 gray, so it matches the standard gray of typical switchgear and panel lineups. Note it's still a NEMA 1 enclosure, so aluminum doesn't buy you an outdoor rating.

It's certified to CSA C22.2, which is the Canadian standard set inspectors look for. For a spec submittal, the part to list is Eaton B-Line 6660-3RAHS NK.

Yes, as long as the rest of the run is 6 x 6. The 6660-3RAHS NK is a 60 inch straight section in the 6 inch by 6 inch size, so it lines up end to end with other 6x6 sections and fittings. Elbows, tees, end plates, and connectors are separate items and are not part of this section.