Gerber Viper WS-21-512 toilet

This Gerber single flush toilets has

  • An elongated bowl.


The Gerber Viper WS-21-512 is part of the Toilet test program at Consumer Reports. In our lab tests, Toilet models like the Viper WS-21-512 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.


Resists soil and odor Resists soil and odor Indicates a large water surface, which helps prevent soiling and odors.
Resists drainline clogs Resists drainline clogs Indicates this model sent simulated solid waste farther, potentially reducing drain-line clogs.
Comfort height Comfort height Comfort height models have a seat height between 17 and 19 inches to the top. These also meet Federal ADA requirements.