If I could give them an negative rating, I would.  Wayfair apparently doesn't know standard bed measurements.  A king size bed width is 76 inches wide and a california king size mattress is 72 inches wide.  This bed frame measures 75 inches wide for king size and 81.1 inches wide for a california frame.  I caught the discrepancy on the site after I ordered it, but before it was delivered and  I was still charged $65 to return it.  The reasoning for Wayfair not returning it without charging me was as follows... "the measurements were displayed and you still ordered it"  The moral of the story is to never assume that an online furniture company knows standard measurements.  Ridiculous.  Bye Bye Wayfair- I will NEVER order from you again!