Sink Smaller for Water Ridge and Bemis Top Button Dual Flush Toilets (by SinkTwice) sink on top of toilet you have two options -

you have two options - for rectangular tanks measuring 18" - 20" (measured with the lid off)

For large rectangular tanks

Our patent pending "fill cycle diversion" faucet is a significant leap ahead of our competition in water efficiency

If your tank is larger than 15

Korky and common ball and valve combinations)

Sink Smaller for Water Ridge and Bemis Top Button Dual Flush Toilets (by SinkTwice) sink on top of toilet you have two options -Create a Sink and Toilet Combo with Sink Twice WATCH INSTALLATION VIDEO: https: youtu. be hY3Ib_Hq3qA . 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 patent pending "fill cycle diversion" faucet is a significant leap ahead of our competition in water efficiency. The basin has plenty of room on the flat soap holder for foam soap