Retractable Canopy: The sliding structure can control the expansion and contraction area of the pergola replacement cover, dynamically shading, and easily adjusting the sunlight and shade you want,Upgrade Fabric: This retractable awning is made of 240 GSM high-density Polyethylene, with up to 90- 95% UV protection. The breathable shade cloth can circulate air and rainwater, is fade-resistant, and effectively cools down,Easy to Install: Includes detailed instructions. Each rod has pre-drilled holes on each end to attach the shackle and snap hook to the wire cable you mounted. Applicable to existing canopies, trellises, gazebos, or newly established frame structures,Ideal Choice: This outdoor shade cover suits dining or parties, swimming pools, backyard, courtyard, garden, porch, garages, and greenhouses. Fashionable and unique sunshade decorations protect furniture from harmful ultraviolet rays,Customization: Our American factory can customize sizes to meet your yard needs. Attention: This product does not include a frame structure. Please let us know for any questions about patio pergolas for shade