The Cover Rx™ is just the prescription for virtually any above-ground spa on the market today. It is ideal for roto-molded and soft-sided tubs, where drilling into the spa cabinet is not an option. The unique undermount installation plate allows the Cover Rx™ to be installed on whatever side of your spa you choose and requires only 18″ of clearance. Whether your spa is square, rectangular, octagonal, or round the Cover Rx™ will be a perfect fit. Your spa cover is completely supported, keeping it off the ground and reducing wear and tear.