Simpson Strong Tie HUC210-2Z ZMAX Galvanized Double 2-Inch by 10-Inch Concealed Face Mount Joist Hanger Provides a heavy-duty connection between joist and header The concealed-flange design provides cleaner lines for visible applications such as second-story decks and patio covers Install wood joists to wood, masonry and concrete Made from 14 gauge steel ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications