B-Line Eaton series wireway elbow fitting, Lay-in, 90° elbow, inside opening, 1, Steel, ANSI 61 gray painted, 10" X 10"

Yes. The Eaton B-Line 1010 HSLIN is sized for 10 inch by 10 inch lay-in wireway, with 10 in height, 10 in width and 10 in length/depth. It will not mate with 4 x 4, 6 x 6 or 8 x 8 trough, since wireway fittings have to match the cross section of the run they join.

An inside-opening 90 degree elbow turns the run so the removable cover faces toward the inside of the corner. Look at the direction your wireway turns and where you need cover access: the 1010 HSLIN puts the opening on the inside radius of the turn. If your layout needs the cover on the outside of the corner, you want the outside-opening version of the same 10 x 10 elbow instead. Ordering the wrong one leaves the cover facing a wall.

No. It's a NEMA 1 (Degree of Protection 1) fitting, which is indoor, general-purpose enclosure protection only, with no rating against rain, dust or washdown. For outdoor or wet runs you need NEMA 3R or 4 wireway and matching fittings.

Yes, the elbow is UL Listed, which is what an electrical inspector looks for on a wireway fitting in a commercial or institutional job.

Steel with ANSI 61 gray paint, which is the standard gray used across B-Line lay-in wireway and most industrial control equipment, so it blends with existing gray trough and panels rather than standing out at the corner.

Lay-in is the method here. You remove the cover, lay the conductors into the corner, then replace the cover, which is faster than trying to pull cable around a 90 degree turn. That's the whole point of a lay-in fitting on a wireway run.

It weighs 12.647 lb. That's a one-man lift, but the gauge steel and the moment arm at a corner mean you should have hangers or supports set on both legs of the turn before you set it in place rather than letting the adjoining trough carry it.

Eaton B-Line part number 1010 HSLIN. That's the 10 x 10, NEMA 1, steel, ANSI 61 gray, inside-opening 90 degree lay-in elbow.