Abacus Edge Flush Plate In BrassThe Abacus flush plates, compatible with the full range of Abacus concealed cisterns, make for a practical yet stylish addition to any modern bathroom. The rectangular backplate of this dual flush toilet button is intersected by two rectangular panels that dictate the flush volume, giving you more comprehensive control of your water consumption. Depending on the settings of your concealed cistern, pressing the button on the left will produce a