I have had nothing but problems with this toilet seat.  The same week that I purchased it, I had to replace the screws by buying new screws at The Home Depot.  The next week, I had to glue the back of the toilet seat where it ripped apart.  Now I have to get a new toilet seat.  So this toilet seat did not last two weeks.  I should not have to put any STAR Rating on this toilet seat.  I give it a ZERO.