Comfort Flame's Round Top Termination is designed for use with FMI wood burning fireplaces only. This termination includes a mesh screen with a 4 in gain and should be used with 8 in diameter FMI pipe. Features galvanized steel construction that is rust and corrosion resistant. All Direct Vent and Wood Burning products require venting to the outside of the home to achieve proper ventilation and firebox combustion. FMI Products offers a full assortment of venting components to properly vent the Direct Vent or Wood Burning fireplace.