The MantelMount Cable Routing Boxes are designed to create a hidden reusable channel to route signal cables through the wall behind a MantelMount. These cable boxes thread into standard two-inch conduit and are attached to studs. When new cables are added in the future, they can easily slide through the large conduit, eliminating the hassle of fishing wires through your wall for external device connections. The Cable Boxes rotate at a 45-degree angle so they can accommodate many configurations. The kit includes two cable routing boxes with a cover for each. Watch the product video for further demonstration! NOTE: Metal Conduit Not Included but can be bought at any hardware store. Specs: Length 82 mm, Width 60 mm, Height 130 mm