For most Caroma, Glacier Bay, Jacuzzi, Lavelle, Porcher, Ariel Bath, and Any LowBoy Toilet. Replaces original Quietflow and all Bottom Water fill Toilets with Larger Lower Tanks. Universal toilet Lowboy Toilets, Case Lowboy (or Kidney) toilets. Water Level Adjustment from 4 to 9 inches Deep Lower Toilet Tanks needs Larger Float Mechanism NuFlush high-end fill valve assembly for Kohler Lowboy Toilets. The fill valve is highly durable and includes Extra Large Float Mechanism Larger Float allows the valve to fit 7/8 Inch Water line pipe connections. Valve fits Lowboy Toilets like American Standard, Inga, Lexington, Luxor, Plaza, Roma, Ellisse, Galleria and Hamilton Fits Kohler Lowboy and Mansfield Lowboy Toilets.