Cushion Cover only Roho HP Heavy Duty 18 x 20 Oxygen Conserver Concentrators 3cm) *Overall Length (Upright) MSHQ WA11730 3cm) *Overall Length (Upright) I can give you a discount Protects ROHO cushions from rough wear and tear fluids and the degenerating effects of poor quality ozone * Helps protect the cushion from rugged use and every day wear and tear * Protects against incontinence with its fluid resistant material and durable construction * Although this new cover is ruggedly designed it still allows for the benefit of the therapeutic skin protection of the ROHO cushion * Allows for easy access to ROHO cushion valves and the ISOFLO Memory Control© on SELECT Series cushions with a double pull zipper *