A traditional Trex Pergola with ShadeTree Canopy in Captain Navy offers 100% shade coverage for hot summer days. The retractable canopy allows for varying looks and shade control while adding a pop of color that matches the Trex Furniture table and chairs. Fabricated with cellular PVC, this patio cover will be low maintenance and beautiful for a lifetime. Measurements are 18' wide x 18' projection with 10" x 8' high square columns.