Retractable Canopy: The sliding structure allows you to control the expansion and contraction area of the pergola replacement cover, dynamically shading and easily adjusting the sunlight and shade as per your requirement. Upgrade Fabric: This retractable awning is made of high-density Polyethylene, providing up to 90-95% UV protection. The breathable shade cloth can circulate air and rainwater, is fade-resistant, and effectively cools down the area. Ideal Choice: This outdoor shade cover is ideal for dining or parties, swimming pools, backyards, courtyards, gardens, porches, garages, and greenhouses. These fashionable and unique sunshade decorations protect furniture from harmful ultraviolet rays. Easy to Install: Detailed instructions are included with the product. Each rod has pre-drilled holes on each end to attach the shackle and snap hook to the wire cable you mounted. It is applicable to existing canopies, trellises, gazebos, or newly established frame structures. Customization: Our American factory can customize sizes to meet your yard needs. A 3-year limited warranty is also provided. Please feel free to reach out to us for any queries related to patio pergolas for shade.