Basement Floor Jack 19in-36in Adjustable House Jack - Temporary

In this review of the 2 PCS Basement Floor Jack set, the bottom line is simple: these adjustable house jacks are for homeowners, contractors, and DIYers who need reliable temporary support and leveling capability for floor joists, porches, or crawl spaces. The reviewer found the pair to be robust and straightforward to use, with a clear focus on a high load capacity and corrosion resistance. The standout reason to buy is the practical combination of a 4400 lb capacity per jack and a telescoping height range of 19in to 36in, which covers most underfloor and deck support tasks without overcomplication.

Key Features

• Heavy load capacity: Each jack supports up to 4400 lbs, providing strong temporary support for weakened beams or localized sagging.
• Adjustable range: The 19in to 36in telescoping range lets users fine tune height for leveling and temporary shoring in crawl spaces and basements.
• Durable finish: Zinc-colored surface treatment improves corrosion resistance for use in damp environments common to basements and under-deck areas.
• Secure locking: A safety locking M22 nut and included pins give added strength and prevent unintended collapse during use.
• Easy installation: Supplied screws and nuts plus double carriage locks mean the jacks can be put into service in minutes for temporary jobs.
• 360 degree swivel top: The included swivel bar (one per set) allows the top plate to rotate and align with angled joists for better contact.

Who It's For

This product is aimed at homeowners repairing sagging floors, small contractors needing temporary support during joist replacement or leveling, and anyone working in crawl spaces, porches, decks, or stair framing who requires a portable, adjustable jack. Its galvanized finish and 4400 lb capacity suit heavier residential tasks where a temporary but robust support is needed.

Those seeking permanent structural solutions or engineered, long-term support posts should look elsewhere; these jacks are explicitly designed as temporary or secondary supports and are not intended to replace permanent foundation or load-bearing repairs.

Pros & Cons

Pros

• High 4400 lb capacity makes each jack suitable for many residential support needs.
• Adjustable 19in to 36in range covers a wide span of typical basement and deck heights.
• Zinc-colored surface offers corrosion resistance for damp environments.
• Safety locking M22 nut, pins, and double carriage locks add security during use.

Cons

• Not intended as permanent support, so additional permanent repairs will still be required.
• Only one swivel bar provided, which may limit simultaneous multi-angle adjustment when both jacks need rotation.

Specifications

Brand	OPERMAXER
Load capacity (each)	4400 lbs
Adjustment range	19in - 36in
Base plate size	5in x 5in x 0.20in
Top plate size	4in x 4in x 0.28in
Thread	M22 with safety locking nut
Finish	Zinc-colored surface for corrosion resistance

Our Verdict

For temporary shoring, leveling, and short-term support tasks, this 2-pack of adjustable basement floor jacks offers strong value thanks to a 4400 lb capacity, broad height range, and corrosion-resistant finish. It is a practical, easy-to-install option for homeowners and contractors who need dependable temporary support, but it should be paired with a permanent structural plan when long-term repair is required.

Frequently Asked Questions

Are these jacks suitable for permanent support?
They are designed only for temporary or secondary support and should not be used as a permanent replacement for structural repairs.

How much height adjustment do they provide?
Each jack adjusts from 19in to 36in using the telescoping sections and M22 threaded locking nut.

Do both jacks include swivel tops?
Only one swivel bar is included with the set, allowing one top plate to rotate 360 degrees; the other top plate is fixed.