This picture illustrates NAUTICAL SERIES Domed Shape unit. The frames are typically made from one inch square Galvanized. Steel Tube on which is mounted 24 Gauge Galvanized. Sheet Steel with a covered seam set at intervals to follow the frame and all powder coated in your choice of colors. Average budget: $35 / per sq.ft. Weight: +/- 4 lbs / per sq.ft.