Description:Keep your cantilever patio umbrella securely supported with this 2-piece fillable umbrella base designed for outdoor patios, decks, gardens, and poolside spaces. The two large plates fit directly over compatible umbrella crossbars and lock into place, helping reduce movement while providing a simple tool-free installation and removal process. Each plate features a wide top filling opening and a side drainage outlet for convenient filling and emptying with water, sand, or a combination of both. When fully filled with water and sand, the base reaches a combined weight of up to 274 lbs, providing added support for compatible cantilever umbrellas. Integrated grooved handles make the empty plates easier to lift and reposition when needed. Built-in cross brackets are designed for cantilever umbrellas with 9-inch base hole spacing. Please note that a cross base and umbrella are not included.Specifications:Color: BlackMaterial: HDPEProduct Dimensions: 35" x 35" x 5"Compatible Base Hole Spacing: 9"Net Weight: 15 lbsPackage Includes: 1 x Fillable Cantilever Umbrella Base