The Kohler Highline Classic K-3493 is part of the Toilet test program at Consumer Reports. In our lab tests, Toilet models like the Highline Classic K-3493 are rated on multiple criteria, such as those listed below.
Solid waste removal: The ability to move simulated waste through the bowl and trap.
Noise: Flush quietness without the seat.
Bowl cleaning: How well flushing cleaned the bowl's front and sides.