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EONECROSS adjustable house jacks (screw jack posts) are engineered heavy-duty steel columns designed to level sagging floor joists, reinforce main beams, and stabilize basements or crawl spaces. They provide safe, reliable structural support for residential leveling and renovation projects.
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Compare our heavy-duty adjustable jack post variants by height range, rated load capacity, and pack options to select the right model for your structural project:
| Model / Series | Adjustable Height | Max Load Capacity | Pack Options | Primary Application / Use Case | Key Features |
|---|---|---|---|---|---|
| Low-Profile Series | 4.3″ – 7.3″ | 4,500 lbs | 6 Pack | Low-clearance crawlspaces, tight under-floor support | Compact design, anti-rust coating |
| Mid-Clearance Series | 11.8″ – 16.5″ | 6,600 lbs | 6 Pack | Medium crawlspace & floor joist leveling | Precision screw thread, heavy-duty steel |
| Heavy-Duty Series | 11.8″ – 16″ | 11,023 lbs | 2 Pack / 4 Pack | Heavy-duty joist reinforcement & basement support | High load rating, thick-wall steel tube |
| Extended Reach Series | 16″ – 21″ | 11,023 lbs | 4 Pack | Standard basement heights, main beam support | Extended reach, secure locking mechanism |
| 4″ × 4″ Extreme Duty | 13″ – 19″ | 24,700 lbs | 1 Pack / 2 Pack | Fits 4x4 wood posts, heavy structural foundation repair | Fits standard 4x4 posts, max load rating, High Carbon Steel |
Correct sloping, sagging, or squeaky floors caused by aging or settling joists.
Provide moisture-resistant, low-clearance vertical support in tight under-house spaces.
Stabilize main carrying beams during wall removal or heavy load installations.
Prevent long-term structural sagging with high-capacity steel jack posts.
Reinforce settling foundations and secure structural integrity during major home repairs.
Reliable Steel Construction
Fits Different Repair Projects
For Various Height Requirements
Quick and simple setup
House jacks (or screw jack posts) are heavy-duty steel support columns used to level sagging floors, stabilize weak floor joists, reinforce main beams, and support structures during basement or crawlspace repairs.
They use a threaded steel screw mechanism that allows precise height adjustment. Turning the screw thread raises the top contact plate to fit tightly against the beam, locking it in place to hold heavy vertical loads.
Measure the clearance distance from the stable base to the bottom of your beam. Choose a post whose height adjustment range (e.g., 4.3″–7.3″, 11.8″–16″, or 13″–19″) accommodates your space while meeting the required load capacity.
Yes. Adjustable house jacks are commonly used in crawlspaces to support beams, stabilize floors, and help correct uneven areas. Their adjustable height design makes them suitable for spaces with limited clearance.
Yes, terms like adjustable house jacks, jack posts, screw jacks, and basement support columns are often used interchangeably to describe adjustable steel support columns.
EONECROSS house jacks are made with heavy-duty steel construction designed for reliable support and long-lasting performance. They are built for applications such as floor leveling, beam reinforcement, crawlspace support, and structural repair projects.
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