SLIDING ROOF: Retractable design of the pergola kit, you can retract the roof to a position you like. Customise shade protection throughout the day.ALUMINIUM FRAME: The metal pergola has a sturdy and strong structure, naturally rust-resistant. 16 ground nails to secure to the ground.EIGHT GROMMETS: Allows water to drain, doesn't build up on the garden pergola - won't damage the material and potentially fall on you.WIDE USAGE: An outdoor 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 areas.DIMENSIONS: 2.2H x 3.96L x 2.96Wm. Eaves: 2.1Hcm. Column spacing: 3.45L x 2.45Wm. DO NOT LEAVE UP IN EXTREME WEATHER CONDITIONS.