In the event of an island arrangement without a back section and raised on supports, the drain outlets and the floor plumbing connections must be positioned across the centerline of the 8cm service gap that is created by fitting two 60 cm base units back-to-back (of which one is a sink base unit) or across the 5cm created by installing a 60cm deep sink base unit back-to-back with a 35 cm deep base unit.

In addition to this, the pipes will be centred in the sink base unit centerline, the only one without a back panel and therefore accessible. On request, Valcucine supplies a 30x5cm aluminium guard to conceal the pipes. They must come out of the floor within this space.