| | | The plumbing pipes must also come out of the wall behind back section. The pipes must fall within the 11cm gap, measured across the centerline of the back section and in an area comprised etween Y1 and Y2 (see fig. that varies depending on height of the base unit (see | | pages 76 to 79). It is very important to remember that the drain pipe must always be fitted in the lowest position. The pipes will run from the wall to the sink base unit. | | |