Square Bath Filler WastePerfect for contemporary bathroom themes, this bath filler waste allows you to fill the bath up from the overflow hole, removing the need to have taps on the bath and has a built in push open waste and overflow. To control water flow and temperature to the bath filler, you will need a separate valve or taps that can either be built into a wall by the bath or fitted into the rim of the bath. Once you turn on the valve, water will flow from the overflow