Double-tier Replacement Canopy - 2-Tier Canopy Top Replacement for 8x8 ft dual-tier gazebo frames UV30+ Protection - 200g/sqm polyester layer with PA coating for water repellency & UV30+ protection to block harmful sunray Zippered Ventilated Top - Mesh netting between 2 tier to allows air to pass through; Reinforced corners for better protection Fast Installation - 24 hook & loop straps for conveniently fixing the canopy to frame Measuring Tips - Measure the hemline & hypotenuse of the canopy frame