Comfort Flame"s Horizontal Square Termination Kit is designed for use with FMI and Comfort Flame direct-vent fireplaces. Includes 45 degree elbow, cap and fire stop. Features galvanized termination that is rust and corrosion resistant and a patented twist lock design. 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.