Treasure Garden Classic 50 lb Umbrella BaseUse with any brand small to medium sized market umbrella up to 1. 5 inch pole Solid cast aluminum construction Full stem height and low stem height settings 50 lb weight 20L x 20W inch dimensions Optional 30 lb weight available to add; would bring total weight to 80 lb This Treasure Garden Classic cast aluminum 50 lb umbrella base is perfect for small to medium sized market umbrellas in low wind areas.