Garden Winds OPEN BOX - 12' x 12' Universal Gazebo Replacement Canopy Top Cover - GREEN REPLACEMENT CANOPY ONLY. NETTING NOT INCLUDED. METAL STRUCTURE NOT INCLUDED. This product may be slightly marked or dirty (dirt, pet hair, small stains, etc.), they will still be in good condition however they are not brand new. This universal gazebo replacement canopy top cover fits most standard 12' x 12' square two-tiered gazebos. Durable 180g per square meter poly spun top cover with two-tier ventilated top construction (on average 30% thicker than original canopies). The top tier measures 36" x 36". The outer perimeter of the main canopy is 144" x 144".