The Cover Caddy is one of the most versatile spa cover lifts in the industry. Its powerful gas shocks make lifting and lowering the spa cover a breeze! The Cover Caddy's unique design makes it compatible with many different spa shapes and sizes, including round spas, octagonal spas, and spas with a large radius or cut corners. This spa cover lift comes fully assembled in the box and can be attached to the spa using the under-mount base plate, which makes for easy and immediate installation. It can also be attached to the spa with the brackets included in the box. This lift is also compatible with foam tapers of up to 6" to 4".