Mini fridge stand & washing machine standThe mobile base fridge stand can be used to lift the appliance higher from the floor.The roller base itself is 1.2" in thickness.The feet can be extended from 2.5" to 4.0"The portable washer dolly will bring your appliance higher from 3.7" to 5.2" higher. High enough to avoid the humidity from the floor to damage the appliance.The washing machine trolley has eight height adjustable feet. Each foot comes with suction cap at the bottom. This makes the appliance (on top of mobile case) secure after installation.Refrigerator rollers have two metal frame in square size. Square frame withholds more weight than round pipe.The dolly for washing machine has four DOUBLE swivel casters with locks. The wheels will make the moving easier if you want to clean the area. After cleaning, you can roll the appliance back and then lock the wheels. The lock will secure the wheel so the washer/dryer won't shake in use.The four panel are bigger compared with most brands. Also each panel comes with shocking absorbing pads.