I'd like to let everyone know that toto toilets are by far superior to kohler toilets, based on my experience. I have two toto toilets and two kohler toilets that I had installed in 2006. Both kohler toilets have clogged (I was always careful not to overload the toilets but they clogged anyway). One kohler toilet runs after flushing. My toto toilets have had no problems. DON"T WASTE YOUR MONEY ON KOHLER!!