Typically used to cover a rough opening in a wall or ceiling penetration. The hole in the escutcheon is centered to allow for a free standing SpeediChannel™ to penetrate through a wall or ceiling. This is the fairly un-common type of wall or ceiling penetration. Check carefully, as you may need the Flat Wall Escutcheon. Furnished in two parts, the escutcheon easily snaps onto the SpeediChannel™.