BISupply Basement Floor Jack 19-36 Adjustable Support Post - Stable

In this review of the BISupply Basement Floor Jack 19 - 36 Adjustable Support Post, the reviewer finds it best suited for homeowners and contractors who need temporary, heavy-duty support while repairing sagging floors, joists, or beams. The single biggest reason to buy is the combination of high load capacity and adjustable height, which lets users prop and level a section of floor during repairs without permanent modification. The tone is practical and hands-on, noting build quality, capacity ranges, and real installation tradeoffs observed by users.

Key Features

• Adjustable height: The screw jack adjusts from 19 to 36 in so it can fit a wide range of crawlspace and basement clearances for temporary bracing.
• High load capacity: Each post supports up to 9,700 lb at the minimum height and still handles up to 6,800 lb at full extension, providing substantial lifting power for most residential repairs.
• Durable construction: Made from ISO9001 certified steel with an oxide finish, the jack is designed for repeated use on construction projects without rapid corrosion.
• Secure base and plate: The 3 in diameter base post with welded floor plate and large roof plate spreads load and helps stabilize the jack when anchored to concrete.
• Complete hardware: The set includes a turning bar and locking pins to fine tune support and hold the desired position during repairs.

Who It's For

The BISupply floor jack is aimed at DIY homeowners, general contractors, and restoration crews who need temporary leveling and support while replacing joists, beams, or when stabilizing sagging floors. Its range and rated capacities make it appropriate for most residential and light industrial jobs where temporary support is required.

It is not intended as a permanent structural solution, so homeowners seeking long-term support without further repair work should look to engineered permanent posts or a structural engineer. Also, those who require a very lightweight or highly portable prop for occasional use might prefer a smaller single jack rather than a six-pack.

Pros & Cons

Pros

• Solid build quality and finish gives confidence the jack will resist wear in basement and crawlspace work.
• High per-jack capacity provides reliable support for heavy floor sections during repairs.
• Adjustable range and included turning bar make fine leveling and lift straightforward on site.
• Value pack configuration lets users install multiple supports for larger projects without sourcing single units.

Cons

• Not intended as permanent supports, so follow-up repairs or permanent posts are required after temporary leveling.
• Some customers reported mixed installation experiences, including occasional missing hardware that can delay setup.

Specifications

Brand	BISupply
Height range	19 in - 36 in
Max capacity (min height)	9,700 lb
Max capacity (max height)	6,800 lb
Base diameter	3 in
Finish	Oxide finished steel
Pack quantity	6

Our Verdict

The BISupply Basement Floor Jack 19 - 36 Adjustable Support Post is a practical, good-value choice for temporary leveling and support during repairs because of its strong load ratings, adjustable range, and durable construction. Contractors and homeowners who need to stabilize sagging floors or support beams during remediation will appreciate the capacity and included hardware, while anyone needing a permanent solution should plan for follow-up structural work.

Frequently Asked Questions

Can these jacks be used as permanent supports?
These posts are designed for temporary bracing during repairs and are not intended as permanent structural supports; consult an engineer for long-term solutions.

How much weight does each jack hold?
Each jack is rated up to 9,700 lb at the 19 in setting and about 6,800 lb at 36 in, with actual capacity depending on installation and load distribution.

Do they require anchoring to the floor?
For best stability, secure the base plate to a concrete slab before extending; this helps the jack resist shifting under load.