Elevation: Lifts appliances 4-12 inches off the ground.
Adjustability: Expandable to fit different appliance widths and lengths, usually from 16 to 24+ inches.
Mobility: Often includes swivel wheels, sometimes lockable, for easy movement.
Material: Heavy-duty steel, stainless steel, or engineered wood.
Support: Strong feet (4 or 8) or a solid base to hold significant weight (up to 400 lbs).