A choice of ports are installed in convenient places to allow everyone in the house to use the system. The dirty clothes are then sucked from the port to a wall mounted unit preferably near the washing machine. A few seconds after the last piece of clothing is inserted the machine turns off and the clothes fall out of the unit. You can also have a return unit which has a port near the drying area. You then send clean dried clothes up the 'clean' pipework which drops into another unit. There is a 2nd pipe comes out of the return unit and 'Tee's' back into the main suction line.