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A cantilever or offset umbrella with an under-weighted cross base tips over in moderate wind — a safety hazard and a frustrating recurring problem. Homeowners and patio owners who already have a cross-base cantilever umbrella stand and need to add serious ballast weight without replacing the entire base will find these 4-panel fan-style HDPE weight plates designed as a direct add-on solution.
The set includes four fan-shaped HDPE weight plates sized to fit over the arms of a standard cantilever umbrella cross base (38.2 × 38.2 × 3.0 inches assembled). Empty weight is 13.43 lbs total. Each plate features a built-in spout with a twist-off leak-proof cap for filling with water or sand — reaching up to 120 lbs per plate with water, and a total filled weight of up to 220 lbs across all four plates with sand. The HDPE construction is UV-resistant, crack-resistant, and deformation-resistant through extended outdoor exposure.
Compatible with cantilever and offset umbrella cross bases. Cross base and umbrella are not included — weight plates only.
If your cantilever umbrella cross base is under-weighted and the umbrella tips or wobbles in moderate wind, these weight plates add up to 220 lbs of ballast directly to your existing base without replacing the entire stand.
Position the weight plates on your existing cross base on concrete pool decking, pavers, or wood decking. Fill with water for easy on-site weight and drain before moving or storing at the end of the season.
Add ballast weight to a cantilever umbrella cross base positioned on grass or soft ground where the base alone provides insufficient stability in wind. The fan-shaped plates distribute weight evenly across all four base arms.
Drain and stack the four plates at the end of the outdoor season for compact off-season storage. The lightweight empty plates are easy to carry to and from storage, making seasonal setup and takedown practical without heavy lifting.
| Product Type | Cantilever Umbrella Weight Plates (Add-On) |
|---|---|
| Compatible With | Cantilever and offset umbrella cross bases |
| Base / Umbrella Included | No — weight plates only |
| Assembled Size | 38.2 × 38.2 × 3.0 in |
| Empty Weight | 13.43 lbs (all 4 plates) |
| Max Filled Weight (water) | Up to 120 lbs per plate |
| Max Filled Weight (sand, total) | Up to 220 lbs (all 4 plates) |
| Plate Count | 4 fan-shaped plates |
| Fill Method | Built-in spout with twist-off leak-proof cap |
| Material | High-Density Polyethylene (HDPE) |
| Color | Black |
| UV Resistance | Yes |
| Crack Resistance | Yes |
| Stackable | Yes — disassembles for compact storage |
| Fill Options | Water or sand |
| Recommended Use | Patio, garden, lawn, poolside |
No. This listing is for the four fan-shaped weight plates only. The cantilever umbrella cross base and umbrella are not included. These plates are designed as an add-on weight set for an existing cross base stand. Ensure your cross base arm dimensions are compatible with the fan-shaped plate design before purchasing.
Each plate has a built-in fill spout with a twist-off cap. To fill, remove the cap, insert a funnel or hose, fill with water or sand to the desired level, and twist the cap back on to create a watertight seal. To drain, position the plate over a drain or bucket, remove the cap, and allow the water to flow out. Sand will need to be scooped out manually.
Water is easier to add and drain on-site, making it more convenient for seasonal use or frequent repositioning. Sand provides a higher total filled weight (up to 220 lbs vs. approximately 120 lbs per plate with water) and is better for maximum stability in consistently windy locations. Sand is also less likely to leak if a cap is not fully tightened.
The fan-shaped plates are designed to fit over the arms of a standard cantilever umbrella cross base. Compatibility depends on the arm width and spacing of your specific cross base model. Measure your cross base arm dimensions and compare to the assembled plate dimensions (38.2 × 38.2 in) before purchasing to confirm fit.
The HDPE material is UV-resistant, crack-resistant, and weatherproof, making it suitable for year-round outdoor exposure. However, in freezing climates, water-filled plates should be drained before temperatures drop below freezing to prevent cracking from ice expansion. Sand-filled plates are generally safe to leave outdoors through winter.
Drain all four plates completely and allow them to dry. Stack the four fan-shaped plates together — they nest compactly for storage in a garage, shed, or closet. The empty weight of 13.43 lbs total makes the stack easy to carry to and from storage.
When fully filled with sand (up to 220 lbs total), these plates provide substantial ballast weight for most cantilever and offset umbrellas in moderate wind conditions. For very large umbrellas (13 ft+) or consistently high-wind locations, additional anchoring measures may be needed. Always close your umbrella during strong wind events regardless of base weight.
These plates are specifically designed for cantilever and offset umbrella cross bases, which have four arms extending outward from a central hub. They are not designed for center-pole umbrella bases, which typically use a different base geometry. Check your umbrella base type before purchasing.
