This termination incorporates a combustion air intake and flue gas termination in a single assembly. Cover seals top of the chimney or chase. Use with InnoFlue® end pipe or Flex end pipe (sold separately). Centrotherm Eco Systems InnoFlue® Chimney Cover, 3 in Size, 9.6 in Length, 15.8 in Width, For Use With: End Pipe/Flex End Pipe, Polypropylene, Black, Domestic