10 Best Adjustable Jack Posts 2025 in the United States

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.

The ASTAMOTOR adjustable house floor jacks are designed to offer reliable support for various construction and renovation needs. With a notable load capacity of 8 tons (or 4400 lbs per jack), these posts are well-suited for leveling floors in areas such as basements, crawlspaces, and even for supporting cabinets and walls. Their adjustable height range of 19.49" to 34.45" makes them versatile enough for different applications, accommodating various structural requirements.

One of the standout features is the quality of materials used; constructed from galvanized steel, these jacks resist corrosion, ensuring durability and strength over time. The double carriage locks included enhance security during use, which is a significant advantage for safety-conscious users. Additionally, the installation process is straightforward, allowing users to set them up quickly with the provided screws and nuts.

There are a few drawbacks to consider. While the jacks can support substantial weight, some may find the 4.92" base plate size slightly limiting in terms of stability on uneven surfaces. The jacks weigh nearly 27 pounds each, which could be cumbersome for some, particularly in scenarios where frequent adjustments are required. Furthermore, while the warranty offers peace of mind, potential buyers might seek more extended coverage, especially for heavy-duty applications.

For anyone involved in home renovations or construction work, particularly in need of temporary support for sagging floors or structural leveling, these adjustable jacks from ASTAMOTOR present a solid option. Their high load capacity and easy adjustability make them particularly useful for DIY enthusiasts and professional contractors alike, but users should keep the base size and weight in mind when making a purchase decision.

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.