Toja Grid Solo pergola post bases secure wood posts for Tojo Grid pergolas to different surfaces. The heavy-duty, 14-gauge steel material delivers exceptional structural strength. Zinc plating and a high-grade powder coating provide resistance to rust and corrosion. The powder coat keeps its colour for many years. A pack of these base plates for posts has four pieces, each capable of accommodating posts that measure up to 4 inches by 4 inches. The steel post plates come with #12 wood screws for convenient installation.