On September 26, 2016 at 22:27, highfigh said...
The slotted raceway- was it originally gray? Looks like Hellermann-Tyton.
No, it's Panduit 4" x 4" in black. Part number is G4X4BL6 and the cover is C4BL6.
I'm using some 3" x 3" at a job I'm starting to trim out now. It's on a plywood back board to bring down cable TV and telephone wiring from the cable ladder:
