Sink Twice for Glacier Bay Dual Flush button sink twice You will need to insert

You will need to insert that same button into this lid and screw it in place

you will need to remove the existing button from your ceramic toilet tank lid by unscrewing the rotary shaped nut (picture above)

For tanks measuring 19

5" - 21" (measured with lid off) please buy the Sink Twice original model WITH its expander kit

FluidMaster 400A (or other Fluidmaster 400 series) is best if you need a valve

Sink Twice for Glacier Bay Dual Flush button sink twice You will need to insertThis is a Sink Twice with custom modifications allowing it to function with a Glacier Bay model dual flush toilet. *Please note this is not a "perfect fit" for Glacier Bay's dual flush, but it is functional and is modified to make it a good fit for the application. It is also the only sink in the world that we are aware of that will work for this application. This particular model comes with a new dual flush button.