The Paragon Outdoor 11' x 16' Canadian Cedar Pergola features a convertible top that can be manually opened and closed to allow just the right amount of sunshine to come in. Perfect for stargazing in the evening too, this pergola is maintenance free. Ground stakes are included and bolts that can be used to secure this pergola to a wooden deck or concrete slab are provided. Installation is problem free. It comes with clear instructions that have step-by-step diagrams.