Biotree 4-Piece Offset Umbrella Base 164 lbs Capacity Heavy-Duty Square HDPE Fillable Plates with U-Locking Pins - Black

<strong>Biotree 4-Piece Fillable Umbrella Base — Stable Foundation for Your Cantilever Umbrella</strong> <p>Secure your offset or cantilever umbrella against wind and shifting with this Biotree 4-piece HDPE base system. Fill each plate with sand, water, or both to reach a combined 164 lbs of counterweight. U-locking pins keep all four plates aligned and connected for consistent, wobble-free performance on patios, decks, and poolside areas.</p> <strong><em>Note: Umbrella is not included. Fits 9–10 ft offset umbrellas and 8 ft cantilever umbrellas.</em></strong> <ul><li><strong>164 lbs max counterweight</strong> when all four plates are filled with sand and water combined</li><li><strong>U-locking pin system</strong> clicks all four plates together to prevent shifting during wind gusts</li><li><strong>Wide-mouth spout and twist-lock caps</strong> make filling fast, clean, and leak-free during use</li><li><strong>UV-resistant HDPE material</strong> withstands prolonged sun exposure without cracking, fading, or warping</li><li><strong>Quick-drain ports and nested stacking</strong> allow compact, efficient off-season storage in minutes</li></ul> <ul><li>Material: HDPE</li><li>Each Plate: 20" x 20" x 3" (L x W x H)</li><li>Net Weight: 18.5 lbs (empty)</li><li>Weight Capacity: 164 lbs (filled)</li><li>Color: Black</li></ul> <ul><li>4 x Fillable HDPE plates</li><li>4 x U-locking pins</li><li>1 x User's manual</li></ul>

• 164-lb Fillable Weight Capacity: Fill each of the four HDPE plates with sand, water, or a combination of both to build up to 164 lbs of total counterweight that keeps your offset or cantilever umbrella anchored firmly even during breezy outdoor afternoons without the need for any permanent installation hardware.
  
• U-Locking Pin Connection System: Sturdy metal U-pins thread through alignment holes in all four plates and click securely into place, locking the panels together as a single unified base unit that resists lateral shifting and prevents individual plates from spreading apart during use on smooth deck or patio surfaces.
  
• Fast-Fill Wide-Mouth Spout Design: Each plate features an oversized spout opening sized to accept a standard garden hose nozzle for convenient filling without spillage, plus a precision-threaded twist-lock cap that seals tightly to prevent leaks through the entire outdoor season regardless of heat or vibration.
  
• UV-Resistant HDPE Construction: High-density polyethylene retains its structural integrity and surface color through seasons of direct UV exposure, moisture contact, and temperature cycling, meaning the plates will not crack, deform, or become brittle over years of year-round outdoor use on patios, decks, and pool surrounds.
  
• Compact Storage via Nested Plates and Quick-Drain: When the outdoor season ends, open the drain ports on each plate, allow them to empty completely, then stack all four panels flat on top of each other using the integrated grooved side handles for a space-saving footprint that fits easily in most garage or shed storage areas.