Half Round Fillable Patio Umbrella Base for Wall and Railing Placement, 46 lb Sand Capacity, Black

A semi-round fillable umbrella base designed to sit flush against a wall or railing, reducing the footprint compared to a full round base. Fill with sand for up to 46 lbs of anchoring weight or water for up to 40 lbs; both can be combined for maximum stability. HDPE base with steel pole insert and decorative textured finish. Tightening knobs secure the pole. Must be placed against a wall or support structure. Assembly required. Single color: black.

Best For

• Balconies and small patios where a full round base would take up too much floor space
• Wall-side and railing-adjacent umbrella placements where a flat-back base sits flush without protruding
• Anyone who needs a fillable base that can be emptied and stored flat during off-season
• Patios where a decorative textured base finish is preferred over a plain utilitarian look

Why This One

• Semi-round flat-back design sits flush against walls and railings, reducing the footprint by roughly half compared to a full round base
• Dual-fill option accepts sand (46 lbs) or water (40 lbs), or both combined, for adjustable anchoring weight
• Fits 1.5 in. and 2 in. diameter umbrella poles with tightening knobs for a secure hold
• HDPE and steel construction rated for year-round outdoor exposure
• Decorative textured finish blends with patio furniture rather than looking purely functional

Key Specs

• Shape: Semi-round (flat back)
• Dimensions: 19.75 in. L x 12.25 in. W x 15 in. H
• Fill capacity: Up to 46 lbs (sand) or 40 lbs (water)
• Pole compatibility: 1.5 in. and 2 in. diameter
• Material: HDPE base, steel pole insert
• Color: Black
• Placement requirement: Must be placed against a wall or support
• Assembly required