I ordered 2 of the undercarriages. For a washing machine and a dryer. The build quality is quite good. Mass coherent., Only with an undercarriage, the rear wall was just not working properly and a corner that keeps the machine was not sealed properly. Therefore only 4 stars though it functional so far are no defects. Even the frame keeps the machine properly when spinning at 1400 revolutions. Unlike the time where de washing machine was Nocht directly on the granite tiles, is only a minimal hike determine.