Product review (2 stars): Flapper is held open instead of shut!!
Seems to be fairly heavy steel and decent finish BUT if it is such a major design failure then who cares about looks. When its held horizontally the spring holds the flapper OPEN !  Hello this won't work!! I unhooked the spring but then the flapper just bangs around and will definitely allow wind to blow in. Im going to try and disassemble and reverse spring if this don't work Im going to send back.