US Patent 9976247 Laundry machine with versatile tub

A laundry machine for treating laundry is provided with a tub which includes a discharge hole for draining liquid out of the tub, and a plurality of drain-connection elements. The laundry machine further includes a discharge duct fluidly connected to the discharge hole for collecting liquid drained from the tub, and fixed to the tub by at least one of the drain-connection elements. The plurality of drain-connection elements include at least two different types of drain-connection elements, each one adapted for fixing a corresponding type of discharge duct to the tub by means of a corresponding connection arrangement.