4 PCS Adjustable Floor Jacks 11.8 in-16 in Height Range - Grey Pack

Our review of these 4 PCS Adjustable House Floor Jacks covers whether they are a practical, heavy-duty choice for temporary structural support. In short, these telescoping jacks are best for homeowners, contractors, and renovators who need an inexpensive, steel-built solution to temporarily stabilize or level floor beams, porches, decks, crawl spaces or roof trusses during repair and construction. The single biggest reason to buy is their sturdy, painted steel construction combined with a useful 11.8 in to 16 in adjustment range that gives reliable support where a temporary jack is required.

Key Features

• Auxiliary support: Designed to provide temporary or additional support during construction and maintenance, helping to stabilize weak floors and joists.
• Height adjustment: Telescoping design adjusts from 11.8 in to 16 in so you can fine tune support height for many jobs without custom shimming.
• High capacity: Each jack is rated roughly 3 to 4.5 tons (9920 lbs to 6860 lbs) so they can handle heavy-duty applications when used properly.
• Durable build: Heavy-duty steel with a painted finish increases resistance to wear and helps the jacks last through multiple uses on site.
• Simple installation: Rotate the top plate to the desired height and secure with a spanner and nut for straightforward setup.
• Safety features: Includes an M22 threaded screw and locking pin for added strength and to reduce the chance of unintended movement.

Who It's For

These jacks are aimed at contractors, remodelers and DIYers who need a set of portable, robust supports for temporary leveling and stabilization tasks. They work well on new construction framing, porch and deck repairs, crawl space shoring and short-term bracing where a mechanical, adjustable solution is preferable to stacked wood or improvised props.

They are not intended as permanent foundation supports and those who require fine micrometer-style under-load adjustment or hydraulic lifting should look elsewhere. Also, users who need adjustment under heavy live load will find the manual rotation and securing approach less convenient than screw-jack designs rated for in-situ adjustment.

Pros & Cons

Pros

• Solid steel construction and painted finish deliver dependable durability on job sites.
• Useful height range of 11.8 in to 16 in covers many common temporary support needs.
• Good load capacity per jack for heavy-duty tasks when used as intended.
• Simple, mechanical setup with M22 thread and locking pin for safety.

Cons

• Adjustment can be difficult or impossible under load, so jacks must be positioned and adjusted before full loading.
• Manual rotation and spanner tightening is slower than hydraulic or screw-type systems for frequent adjustment.

Specifications

Pack count	4 PCS
Height range	11.8 in - 16 in
Height capacity (each)	9920 lbs to 6860 lbs (3-4.5 ton)
Base plate dimension	5 in x 5 in x 0.19 in
Top plate dimension	4 in x 4 in x 0.27 in
Thread type	M22

Our Verdict

These 4 PCS adjustable jacks are a practical, cost-effective choice for temporary support and leveling tasks where a rugged steel jack with an 11.8 in to 16 in range is needed. They represent good value for contractors and renovators who plan ahead to set and secure height before loading, but they are less suited to on-the-fly under-load adjustments or permanent foundation use.

Frequently Asked Questions

Can these jacks be used as permanent supports?
No. They are intended for temporary or auxiliary support during construction and maintenance and should not replace permanent structural supports.

Are the jacks adjustable under load?
Customers report adjustment is difficult or impossible under load; it is safest to set and lock height before applying full weight.

What tools are needed to install them?
Installation requires keeping the base plate stationary, rotating the top plate to height, and using a spanner to fix the nut; a spanner or wrench sized for the M22 nut is required.