Orange Aluminum channels are frequently used for door framing, wire protection, or harnessing. Channels consist of two protruding flanges from one side of a web that often resemble the letter C in cross-section schematics. These C-channels come in various sizes and materials and offer a lot of versatility.
Orange Aluminum offers channel 1/2" - 3/4" x 3/4" x 1/8" in 96" length: