X3003 uninviting (mm) . 110 22.2 2.5 (56mm) (S810 Min. 1.6" (@41mm) Hole Dia 11/14" (232mm) 1.Remove the washer (2), black gasket (4) and nut (5) from the assembly. 2.Slide washer (2) up to underside of flange (3). Insert flange (3) and washer (2) into sink and secure with the black gasket (4) washer and nut (5) from underneath the sink. 3.Put down and check the Spring loaded stopper (1). 4. Connect assembly to drain.