That's largely due to the fact that this kit is so simple, so effective, and so complete in terms of providing protection. You'll get two 20 ft. white sidewalls with three windows each, one solid white endwall, and one zippered white endwall for easy entry and exit. Every wall is enclosed, but the three clear window panels on each sidewall allow you to maintain your outdoor view so you don't feel like you're missing anything by being closed up in the canopy. It's really the best of all possible worlds.
And that's why this is such a popular accessory among King Canopy owners. You get added privacy, added protection, and added peace of mind with relatively little effort or investment. Most folks agree that this White Sidewall Kit with Windows for King Canopy 12 ft. x 20 ft. Canopies makes outdoor living a much easier and less intimidating prospect in all sorts of situations.