RETRACTABLE CANOPY: 5 Support slide rails and 6 top tubes to provide support for the outdoor pergola. The detachable top cloth can be slid horizontally by the drawstring, which means you can fully customize the shade level throughout the day. There are 5 drainage holes on the canopy to prevent water accumulationPRACTICAL CURTAINS: With 4 detachable zippered polyester curtains, this pergola kit can block wind and provide a privacy space for you to enjoy you leisure timeSTABLE DESIGN: With 4 all-aluminum columns for durability and reliability. Ground nails and expansion screws provided for the feets to further reinforce the garden pergolaWIDE USAGE: A stylish pergola with retractable roof, provides lots of space for you to enjoy leisure time with your family or friends. Ideal for backyard, lawn, garden and more outdoor areasDIMENSION: Overall Dimension: 3.6L x 3W x 2.27H m. Column Spacing: 3.28L x 2.55W m