Made of heavy-duty HDPE plastic with weather-resistant UV protection coating, waterproof, stable and durable Easy-to-fill spout makes for convenient filling, cleaning, and storage Sturdy 4 square plate construction supports your offset patio umbrella stand perfectly Can be filled with 200LB of sand so that plates provide additional weight keeps your cantilever umbrella stable
Perfect for all kinds of cantilever offset patio umbrellam(Cross bar base is not included). One plate dimensions: 20 x 20 x 4.7inch