4-Pack Adjustable Floor Jack Supports 6-9 in - Compact Home Lift

In this review of the 4-Pack Adjustment Floor Jack Post, the bottom line is simple: these compact steel jacks are a practical temporary support and lifting solution for homeowners tackling sagging floors, porches, decks and crawlspaces. They shine because of their combination of a low storage footprint and a reliable 6 to 9 in adjustment range, making them useful for short-term leveling and stabilization jobs where a full jack or permanent repair is not yet an option. The kit is aimed at DIYers and small contractors who need portable, heavy-duty temporary support.

Key Features

• Adjustable height: The 6 to 9 in range provides fine control for small lifts and leveling jobs without complex tools.
• High load capacity: Built from sturdy steel with a protective coating, each jack can handle heavy loads for temporary support situations.
• Compact design: The small footprint makes the jacks easy to store and deploy in tight spaces such as crawlspaces and between joists.
• Simple adjustment: Height is set by turning the screw with a pipe wrench and locking the set nut, allowing controlled incremental lifts.
• Portable: Lightweight construction allows these jacks to be carried and positioned by one person for quick supporting tasks.
• Corrosion resistance: The coated steel finish helps extend service life in basements and other damp environments.

Who It's For

The 4-pack is best for homeowners, handy DIYers and small contractors who need a temporary solution to support or level stairs, porches, decks, roof trusses and small floor sections. It is particularly well suited to jobs where short travel is needed and where permanent repair is planned later.

Those who need long-term shoring for structural work, or who require large single-point lifts beyond the 6 to 9 in range, should consider a dedicated heavy-duty jack or professional shoring system instead. This product is not a replacement for permanent structural repair.

Pros & Cons

Pros

• Sturdy steel construction provides dependable temporary support under loaded floors and beams.
• Easy to adjust and lock in place using a pipe wrench and set nut for controlled lifts.
• Compact and lightweight, so the jacks are practical in tight, hard-to-reach work areas.
• Good value for money when four supports are needed for distributed leveling.

Cons

• Limited 6 to 9 in travel makes it unsuitable for large lifts or permanent foundation work.
• Requires a pipe wrench and manual effort to turn the screw; no built-in handle or quick crank is provided.

Specifications

Product type	Mini screw floor jack supports (4-pack)
Height range	6 to 9 in adjustable
Material	Sturdy steel with protective coating
Load capacity	Supports up to 7,000 lb
Typical uses	Stairs, porches, decks, crawlspaces, roof trusses
Adjustment method	Turn screw with pipe wrench and tighten set nut

Our Verdict

The 4-Pack Adjustment Floor Jack Post is a practical, cost-effective choice for anyone needing temporary support and small lifts in residential settings. Its compact design, solid construction and simple adjustment method make it good value for leveling jobs and short-term shoring, provided you accept the limited 6 to 9 in travel and manual operation.

Frequently Asked Questions

Can these jacks be used under floor joists?
Yes, their compact size and adjustable range make them suitable for placement under joists and in tight crawlspace areas for temporary support.

How is the height locked after adjustment?
Once the desired height is reached by turning the screw, a set nut is tightened to lock the position and secure the jack.

Are these intended for permanent structural repair?
No, they are designed as temporary supports and lifting aids; permanent structural fixes should be performed with appropriate repairs or professional shoring.