Large 3 Sided Backerplate Black (LBK3B3048)

Do you have a larger masonry fireplace? Choose between the small and large black backer plates. The backer plate is used when the masonry fireplace is larger and the faceplate is not able to close the gap between the fireplace and the insert. The backer plate can be used with the faceplate to add more dimensions to the insert while enhancing the look. The small back plate can cover a fireplace up to 40 1/4" Wide x 25 1/4" Tall. The large back plate can cover a fireplace smaller than 48" Wide x 30" Tall.