Can be used in gaps 4-44″ from the floor to your top rail with 1-13 cables. 3/4″ x 3/4″ square material. Can be cut down to a smaller size as it has two flanges that screw on. Holes come pre-drilled on a 3″ center. Powder coated finish. Comes with 6 mounting screws for top and bottom plate.  These are designed for 1/8″ cable only. These cannot be used as termination points, only as intermediate “pass through” posts.