OnlineEEI Base Plate, Zinc Coated Steel, for use with Pipe and Drape System, 18"x18"3/16", 17lb Base - For use with pipe and drape systems, this base will securely hold any fixed height upright pole (up to 8 feet tall) Measurements - Slip-fit style base plate measures 18 inches by 18 inches by 3/16th of an inch, with 2 inch pin, weight of 17lbs Sturdy - Made of zinc coated steel, making this base as sturdy as it is durable No Tools Required - Base plate comes with everything necessary for easy setup, no tools required Optional Weights - Rubber weights that fit over base plate perfectly are available for added stability, sold separately