Wiremold 500 Series 10 ft. Metal Surface Raceway Channel in Ivory

Yes, we have a number of 90 degree angles (elbows). For a complete list, refer to the second to last image, otherwise the link below has most options: https://www.homedepot.com/s/wiremold%2520ivory%2520elbow?NCNI-5

The corner pieces measure 2 1/2", and you will want the raceway channel to overlap this. The length that you cut the channel to will depend on your layout. If you have any additional questions, please reach out to us at (800) 621-0049. Thanks!

This is used for inside wiring anywhere in your home. It is NOT for outside the house use. I did a major remodeling job several months ago where I used this to run a circuit of 8 outlets using 12/3g wire around the outside walls of a fairly large living room. The room had plaster walls and I would have had significant construction problems had I tried to run the wiring in the walls. Make sure to get all the boxes, corners, junctions, etc. that you may need as well.

Yes you can, it's not a problem.

Yes. A bit tight in corners, but it can be done.

They may have it in white but not in your area. You can paint it though.

It depends on what wires you are using it for, if you look under the Info & Guides section and click on the blue Installation Guide link, there is a graph on the second page that shows the wire fit capacities for different types of wire.

Fittings are available to go from wall to ceiling and there are 90's for any change in direction

Not that style. You need wire mold that the front separates from back. They make it. Also low voltage needs to be separated from 120v. Required by the electrical code. They have a two channel wire mold that is used for that purpose.

I believe the low profile box has a knockout on the side with a built-in connection point on the back bracket.