This hardware kit includes the appropriate steel deadfront cover plate for the installation of your circuit breaker. If the panelboard opening requires additional filler plates to blank off the unused space, we have those as well. Measure the opening height in inches. 1X of height is 1.25", 2X of height is 2.5", 3X of height is 3.75 and 5x of height is 5"". 19" wide blank fillers are available from our stock. Order the necessary 1X,2X,3X and 5X combination to fill the total height of the opening.