If you want to fill gap if you have brick extension, this item could fill that at the bottom.It has an internal passage to route the wires.
This bottom piece will add about 3/16 of an inch to the extension length. The width can be customized to your exact width. The options are for the full WIDTH. So that would be the distance from edge of Edge of the Brick to the Edge of Hole or Edge of the opposite side of the brick extension (door side).
