Product review (5 stars): Add another satisfied customer to the list
Second floor washer (Samsung WF365... front loading model) spin cycle was rattling first floor rooms. The pads reduced the vibration and the sound by something like 75%, and our washer has a dryer stacked on it.  Was easy for two people to install, neither having to do more than push the machine a few inches to each side and slide the pads under the feet.  Worth the money.