I finally hung this on the wall, it was basically a standing mirror for about 12 months!  I used 2 drywall screws, tied a metal wire for hanging frames around two metal loops built into the frame of this mirror, and hung the wire onto the screws.  It feels secure and hasn't budged a bit.  It is heavy, about 30 lbs or so, which is why it took so long for me to hang, my husband thought it would fall and refused to hang it.