Adaptable Sink Twice for toilet tanks 16.8" - 20.3" wide measured with tank lid off

Wash your hands with the clean water, leaving the soapy water to clean your toilet when flushed! Sink Twice is a major water saver, leak detector and a space saver. Our one of a kind patent pending "fill cycle diversion" faucet is a significant leap ahead of our competition in water efficiency. The sink basin has plenty of room on the flat soap holder for soap containers and the drain is specifically designed to prevent splashes. In 2021, we are introducing a capability to increase or decrease flow to the faucet (see 2021 Functional installation update below). This Sink Twice comes with an expansion kit.   High gloss (diamond polished to a very smooth surface) is our 2021 upgrade!  The largest compatible dimension appropriate for Sink Twice Adaptable is 8 5/8" measured from the outer edge of the back of the tank to the outer edge of the front of the tank (for full coverage).2021 Functional installation update: We have included a one cm long tube (in the parts packet) which is an option