Multi-functional Movable Adjustable Base with Casters Mobile Case/dolly/roller for Washing Machine, Dryer and Refrigerator, Cabinet Perfect for portable washing machine, dryer, Refrigerator, Cabinet and Air Conditioner Durable , firm, adjustable dimension and convenient movement Maintaining ventilation of the bottom, Anti-rust and easy to be moved Ultra-strong rigidness, press resistance and anti-corrosion