

Napoleon's 5" black 3-sided backerplate for the Oakville X4 gas insert. It measures 44" wide by 28 1/2" high around a 33 7/8" by 23 1/2" opening, covering the top and both sides, open at the bottom. It pairs with Napoleon's Oakville faceplates made for a 3-sided backerplate. It hooks onto the insert, and the side cutouts take the insert's rocker switch. Napoleon notes backer plates must not seal the old fireplace airtight. $449.