Bestter Toilet Rectangular Push Button 35mm X 64mm ATS7610
This high quality Bestter push button is a direct replacement for your current button. The button is square and fits a hole of around 37mm X 66mm (see dimensions on drawing). Note, the distance between the centers of the actuator rods is 30mm. Rods end around 220mm below the cistern lid but can be cut down to any size shorter than that quite easily.