single unit for both overflow and less overflow applications; 2-1/4'' diameter polished and finished upper flange and stopper only; 1-1/4'' OD X 4'' tailpiece (total below sink length is 6-1/2''; length is 7'' when thin sink spacer is used); maximum installation thickness 2'' (add 9050Z-EXT for thicker applications); longer tailpiece available see 9069
for widespread faucet with lift knob & rod, it is recommended to add LR-RET