Electro House mortise frame for track rails is designed to be used in conjunction with an appropriate size track rail of the Unique Elegance series. This simple product is made of metal and is an accessory that significantly increases the functionality and scope of track electrical accessories. The frame is installed in the prepared hole, and a track rail is already mounted in it. A track rail mounted in this way will not protrude above the surface. Using a mortise frame, you can integrate the rail into a drywall or table surface. The product is delivered without fasteners.