This thing is RUSTIFIED.  And by that I mean they seem to have dipped the metal, including the mounting hardware, in acid to make it rusty and corroded and thus only marginally functional... not optimal.  Also the main frame of the thing on the one I got is off center so it looks like a crooked molecule.  Unusable.  2 stars because it functioned fine once I finally got it mounted and if I could ignore how crooked it looks it's kind of ok.