The Shelterlogic Super Max 18 x 40 Feet Enclosure Kit is a great way to add versatility to your canopy. It includes everything you'll need to enclose your canopy, including a double-zipper front door for easy access. The enclosure walls can be attached to the frame in minutes using bungee fasteners, allowing you to quickly and easily transform your canopy when needed. Each side is constructed from durable polyethylene fabric that's waterproof and UV ray resistant, and its heat-sealed seams make it more tear-resistant than conventional stitching.