35.5 in X 35.5 in Cantilever Umbrella Weighted Base - Heavy Duty 300lb

Our review of this 35.5 in X 35.5 in cantilever umbrella weighted base finds it best suited for owners of large offset patio umbrellas who need a no-fuss, high-capacity counterweight. The single biggest reason to buy is its ability to provide roughly 300 lb to 380 lb of ballast when filled with water or wet sand, giving heavy cantilever umbrellas much more stability than smaller bases. It arrives ready to use with wheels built in, eliminating assembly and making occasional repositioning straightforward.

Key Features

• Large footprint: The 35.5 in X 35.5 in surface area increases stability for wide cantilever umbrellas and reduces tipping risk in steady breezes.
• High ballast capacity: When filled with water this base yields about 300 lb to 380 lb of counterweight, and filling with wet sand will provide even greater mass.
• No assembly required: The base is ready to accept an umbrella immediately, saving time and removing a common setup frustration.
• Durable construction: Made from high-density HDPE plastic that resists impact and helps the base hold heavy loads over time.
• Mobility built in: Integrated wheels allow the filled base to be moved more easily than fixed concrete blocks.
• Steel cross support: A steel cross at the bottom adds rigidity so the original umbrella base plate is no longer required for many installations.

Who It's For

This weighted base is ideal for owners of large rectangle cantilever patio umbrellas, especially those with 9 ft X 12 ft or 10 ft X 13 ft ZLACUIU-style offset umbrellas, or any heavy-duty offset umbrella that requires a significant counterweight. It is most useful in yards, patios, or commercial outdoor seating areas where space permits a large base and where wind resistance and stability are priorities.

Consumers with very small yards, tight storage areas, or lightweight parasols should look elsewhere, since the footprint is substantial and some customers find it takes up too much space. Also note that a few customers reported leakage issues when filling, so users who want a fully maintenance-free sealed ballast may prefer alternative solid bases.

Pros & Cons

Pros

• High ballast capacity provides strong stability for large cantilever umbrellas.
• No assembly and built-in wheels make setup and occasional relocation simple.
• Durable HDPE construction with a steel cross support increases long-term reliability.

Cons

• Large 35.5 in footprint can dominate small yards or compact patio spaces.
• Some customers have reported occasional leakage when filling, requiring care during use.

Specifications

Size	35.5 in X 35.5 in X 7 in
Suitable umbrella sizes	Especially for 9 ft X 12 ft and 10 ft X 13 ft rectangle cantilever umbrellas
Ballast capacity	Approximately 300 lb-380 lb when filled with water (more with wet sand)
Material	High-density HDPE plastic with steel cross base
Assembly	No assembly required; ready to install
Mobility	Equipped with wheels for easier movement

Our Verdict

For owners of large cantilever umbrellas who need robust, ready-to-use ballast, this 35.5 in X 35.5 in base offers strong value through high weight capacity, durable HDPE construction, and convenient wheels. It is an especially good choice for those with space to accommodate its large footprint, but less suitable for very small patios or buyers seeking a sealed, maintenance-free solid base.

Frequently Asked Questions

Can this base be filled with materials other than water?
Yes. The base can be filled with water for roughly 300 lb-380 lb of ballast and can accept wet sand to increase weight further.

Does the product require assembly?
No. The base is described as no assembly required and can accept an umbrella as soon as it is placed and filled.

Is this compatible with other cantilever umbrellas?
The base is especially suitable for the listed 9 ft X 12 ft and 10 ft X 13 ft rectangle cantilever umbrellas but is also compatible with many heavy-duty cantilever umbrellas that need a large counterweight.