Best Choice Products 38.5lb Steel Umbrella Base, Square Weighted Patio Stand for Outdoor, Backyard, Market Umbrellas, Sun Shade w/Tightening Knob and Anchor Holes – Black. Product Dimensions: 24.5 x 24.5 x 14 inches. Item Weight: 38.5 pounds. STYLISH BACKYARD COMPLEMENT: This base completes your patio umbrella for a simple yet elegant addition to any backyard or garden. HEAVY-DUTY STEEL: Made of heavy-duty steel with a powder-coated finish, this anti-scratch base can maintain an attractive appearance for years to come. THE PERFECT FIT or 3 CAP SIZES: Strategically equipped with a twisting knob on its side to tightly secure umbrella poles between 1.5 and 2 inches in diameter to the base. EASY ASSEMBLY: Set this base up in no time by performing three simple steps: add the bolt before inserting the metal plate and screwing in the knob. ANCHOR HOLES: An anchor hole is drilled into each corner of the base so you can easily secure it to your wood deck or patio and help ensure a balanced umbrella; OVERALL DIMENSIONS: 24.5″(L) x 24.5″(W) x 14(H).