Innovative
Over-Toilet Sinks

from Sink Twice™

Over-toilet sinks designed to store the water you use for handwashing in the toilet tank so it can be used for flushing.

As seen on:

Sink Twice Products

Sink Twice Original

Sink Twice original is for smaller 15.25 - 16.8" toilet tanks (measured with the tank lid off).

Buy Sink Twice Original

Sink Twice Adaptable

Sink Twice Adaptable is adjustable for toilet tank sizes from 15.25" - 21" (measured with the tank lid off).

Buy Sink Twice Adaptable

Sink Again

Sink Again is for 1.6 GPF and 1.28 GPF tanks that are 17" - 19.5" wide in the back, but 14" - 17.5" in the front (measured with the tank lid off).

Buy Sink Again

Customize your Sink Twice for a top button system 

We can drill a hole in Sink Twice so it will function with your top button dual flush (must coordinate custom size and location of button hole). Contact us for your custom fit.

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