Patent attributes
A plastic chimney cap is molded in one-piece from either a thermoset or a thermoplastic resin. The chimney cap has a wall extending continuously around a closed-circuit. The wall interior surface defines an interior space. A plurality of vent holes through the wall communicates with the interior space to vent combustion gases. A roof is attached to the upper edge of the wall. A flange is disposed outside the lower edge of the wall and has a perimeter extending completely around the wall. A shoulder connects the flange with the wall. Thickened reinforced regions with threaded holes and mounting screws are spaced apart around the flange perimeter for fastening the chimney cap to the flue. The interior surfaces can be coated with a metallized coating for heat resistance.
