B-Line Eaton series wireway elbow fitting, Sealing plate kit, Lay-in, 90° elbow, inside opening, 12, Steel, ANSI 61 gray painted, 8" X 8"

Yes. The 88-12LE9B is built for 8 by 8 inch wireway, with a stated product height of 8 in and width of 8 in. It will not mate with 4 x 4, 6 x 6 or 12 x 12 trough, so the adjoining straight sections and any other fittings in the run have to be 8 x 8 as well.

Inside opening means the removable cover is on the inside of the 90 degree turn, so the elbow opens toward the short radius of the bend. That is the one you want when the inside face of the corner is the accessible side after the wireway is mounted. If the wall, ceiling or equipment sits against the inside of the turn, you need the outside opening version instead, because you will not be able to get the cover off after install. Decide this from where you will be standing when you lay in conductors, not from the direction of the run.

It is a NEMA 12 fitting, and the sealing plate kit is what gets it there. The kit is included as part of the assembly, so the joints seal against falling dirt, dust and dripping non-corrosive liquid. The elbow is also UL Listed. NEMA 12 is not a wet or outdoor rating, so for washdown or exterior work you need a NEMA 3R or 4 type wireway system instead.

No, the sealing plate kit comes with the 88-12LE9B. It is listed as a feature of the fitting itself, so you are not ordering a separate gasket or plate package to close the elbow up to NEMA 12. Plan on hardware and any additional connectors for the straight lengths on either side, which are separate items.

Yes, it is a lay-in fitting. The cover comes off the inside face of the 90 degree turn so you drop conductors in rather than fishing them around the corner, which is the reason wireway gets specified over conduit on dense panel feeds in the first place. Just confirm the inside of the bend stays reachable after mounting.

Use the elbow whenever the run changes direction 90 degrees and you need to keep the enclosure rating and the conductor bending radius intact. Field-cut corners break the NEMA 12 seal and leave sharp edges on the conductors. This fitting carries the sealing plate kit and is UL Listed as an assembly, which is what an inspector looks for on a rated trough system. Pick inside opening for corners where the short side of the bend is accessible, and outside opening where it is not.

The elbow is steel with an ANSI 61 gray painted finish, which is the standard gray used across industrial enclosures and wireway, so it blends with existing B-Line trough and most panel gear in the same color. If your run is stainless or a custom color, the gray will read as a patch.