Can the cupboard (WSCS1462) hold a heavy washing machine of up to 120kg (265 pounds)?

Absolutely! The cupboard (WSCS1462) has undergone load testing by TÜV Rheinland for up to (265 pounds. The 22mm (0.9 inches)-thick base plate on which the washing machine is placed can withstand loads of up to 265 pounds) The sides of the cupboard also serve a reinforcing function and the cupboard construction is designed to absorb the vibrations of the washing machine and dryer.