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10 Best Adjustable Jack Posts 2026 in the United States

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Our Top Picks

#1

Winner

ELLIS Heavy-Duty Adjustable Steel Shore – Foundation Jack for Basement, Floor Leveling, and Concrete Bracing – 40,000 lb Safe Load Capacity – 31"-56" Adjustment

Rating
10.0
Chosen by1,452
Load Capacity
Material
Ease of Adjustment

Most important from
36 reviews

Load Capacity
It can handle massive loads with ease—strong enough to lift significant structural elements like entire house sections or huge concrete slabs.
Material
The steel shores are built for serious heavy-duty work, featuring welded face plates and a large screw running on bearings that operate smoothly even under extreme weight.
Ease of Adjustment
This jack post is incredibly well made and easy to use, capable of snugging tightly by hand and then further tightened with a metal bar.

The ELLIS Heavy-Duty Adjustable Steel Shore is a strong and reliable jack post designed for supporting foundations, floors, and heavy concrete structures. It offers a wide adjustable height range of 31 to 56 inches, which makes it versatile for different project needs. With a very high safe load capacity of 40,000 pounds, it can handle substantial weight, suitable for both residential and commercial use.

The post is made from high-strength steel, ensuring durability and stability over long periods. Its adjustment system uses an Acme screw and a lock-set screw, which allows precise height control and secure positioning. However, it requires a separate 1-inch steel rod for adjustments, which may be inconvenient if you don’t already have one. The base and top plates measure 8 by 8 inches, providing a solid footprint and good stability when placed under beams or slabs.

Weighing 55 pounds, it is reasonably portable but somewhat heavy to move frequently without help. This jack post is an excellent choice for those needing dependable, heavy-duty support that’s easy to fine-tune, particularly for projects requiring strong and stable shoring. Keep in mind the need for an additional adjustment rod and its weight when planning your work.

Rating
10.0
Chosen by1,452
Load Capacity
Material
Ease of Adjustment

Most important from
36 reviews

Load Capacity
It can handle massive loads with ease—strong enough to lift significant structural elements like entire house sections or huge concrete slabs.
Material
The steel shores are built for serious heavy-duty work, featuring welded face plates and a large screw running on bearings that operate smoothly even under extreme weight.
Ease of Adjustment
This jack post is incredibly well made and easy to use, capable of snugging tightly by hand and then further tightened with a metal bar.
#2

VEVOR House Floor Jack, 53"-93" Height Range, 18000 lbs Max Load Capacity, Adjustable Support Beam Basement Jack Post Pole for Leveling, Lift Support Steel Telescoping Jack Post for Temporary Support

Rating
9.1
Load Capacity

Most important from
315 reviews

Load Capacity
Users find it very sturdy and straightforward to set up, effectively supporting sagging floor joists.

The VEVOR House Floor Jack is a robust option for those needing temporary support for beams, patios, and various construction applications. With an impressive load capacity of 18,000 lbs, it's built to handle heavy lifting reliably. Made from durable Q235 steel, the jack promises long-lasting strength and stability.

Its adjustable height range from 53 to 93 inches offers versatility, allowing it to fit diverse spaces and requirements. This flexibility is particularly beneficial for users dealing with different support scenarios. The height adjustment process is straightforward, employing a simple lever mechanism that doesn’t require additional tools, which enhances the user experience significantly. Two lock pins are included, providing added security once the desired height is set.

A standout feature is the integrated welded base plate, which simplifies installation by removing the need for extra fixing steps. This seamless design could save time and effort during setup. However, while the base plate's integration is advantageous, potential users should consider the size and weight of the jack, as it measures 52.99 x 6.02 x 3.98 inches and weighs 31.2 pounds, potentially making it cumbersome for those with limited space or requiring frequent repositioning. The product’s ranking as #8 in Floor Jacks suggests it’s well-regarded in its category, and the customer reviews reflect a positive reception with a 4.4 out of 5-star rating. Nonetheless, users should be mindful of its intended purpose as a temporary support solution and ensure it fits their specific needs for adjustable jack posts.

Rating
9.1
Load Capacity

Most important from
315 reviews

Load Capacity
Users find it very sturdy and straightforward to set up, effectively supporting sagging floor joists.
#3

AKRON PRODUCTS C-84 Floor Jack, 4'8"-8'4" (15GA) (4)

Rating
9.1
Ease of Adjustment

Most important from
412 reviews

Ease of Adjustment
The adjustable design makes these jacks easy to assemble and set up by oneself.

The AKRON PRODUCTS C-84 Floor Jack stands out in the adjustable jack post category by offering a good balance of features and usability for temporary support during remodeling or construction projects. With a maximum lifting height of 8.4 feet and an adjustable range that accommodates various heights, it's suitable for reinforcing stairs, porches, decks, and weak floors. The 15-gauge material adds strength, which enhances its load capacity, making it reliable for both small and moderately heavy projects. Assembly and installation are straightforward, which is a big plus for those who may not have extensive experience with tools.

On the downside, at 72.8 pounds, it may be a bit heavy for some users to move around easily. While it handles moderate loads well, those looking for something to support heavier structures might need to consider options with higher load capacities. Additionally, the base and top plate sizes could be limiting depending on the specific requirements of your project, so users should ensure they fit the intended application.

Rating
9.1
Ease of Adjustment

Most important from
412 reviews

Ease of Adjustment
The adjustable design makes these jacks easy to assemble and set up by oneself.

Buying Guide for the Best Adjustable Jack Posts

Adjustable jack posts, also known as telescoping steel posts or screw jacks, are essential tools in construction and renovation projects. They are used to provide temporary or permanent support to structures such as floors, ceilings, and walls. When choosing the right adjustable jack post, it's important to consider several key specifications to ensure that the post will meet your needs and provide the necessary support for your project.
Load CapacityLoad capacity refers to the maximum weight that the adjustable jack post can support. This is a crucial spec because it determines whether the post can safely hold the structure you are working on. Load capacities can vary widely, from a few thousand pounds to tens of thousands of pounds. For light-duty tasks, such as supporting a small section of flooring, a lower load capacity may suffice. For heavy-duty tasks, such as supporting a large beam or an entire floor, a higher load capacity is necessary. Always choose a post with a load capacity that exceeds the weight of the structure you need to support to ensure safety and stability.
Adjustable RangeThe adjustable range indicates the minimum and maximum height that the jack post can extend to. This is important because it determines the versatility of the post in different applications. Adjustable ranges can vary from a few feet to over ten feet. For projects with low ceilings or tight spaces, a post with a shorter adjustable range may be more suitable. For projects requiring support at higher elevations, such as multi-story buildings, a post with a longer adjustable range is necessary. Consider the height of the area where the post will be used and choose a post with an adjustable range that fits within that space.
MaterialThe material of the adjustable jack post affects its strength, durability, and resistance to environmental factors. Most jack posts are made of steel, which provides excellent strength and durability. Some may have a galvanized or powder-coated finish to resist rust and corrosion, making them suitable for use in damp or outdoor environments. If you are working in a dry, indoor environment, a standard steel post may be sufficient. For outdoor or damp environments, consider a post with a protective coating to ensure longevity and reliability.
Ease of AdjustmentEase of adjustment refers to how simple it is to change the height of the jack post. This is important for efficiency and convenience during installation and adjustments. Some posts use a screw mechanism, while others may have a pin-and-hole system. Screw mechanisms allow for fine-tuned adjustments, which can be beneficial for precise leveling. Pin-and-hole systems may be quicker to adjust but offer less precision. Consider the level of precision and ease of use you need for your project when choosing the adjustment mechanism.
Base and Top Plate SizeThe size of the base and top plates affects the stability and distribution of weight. Larger plates provide a more stable base and better weight distribution, which can be important for ensuring the post remains secure under load. Smaller plates may be suitable for tight spaces but may not offer the same level of stability. Consider the size of the area where the post will be placed and the importance of stability for your project. Choose a post with base and top plates that provide adequate support and fit within the available space.

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