This is a seriously well made mirror and absolutely gorgeous. No one who sees this is ever going to think that you bought it at a big box or discount store, trust me.  It isn't light.  It comes with all kinds of tabs for hanging it horizontally or vertically.  I added picture wire to mine because I'm lazy and just find that easier - only one hanger to install.  Just make sure it's the right hanger.  You don't want to put this on a wimpy nail tapped into drywall.