ADJUSTABLE HOUSE JACK FOR LEVELING – This jack post stabilizes joists, beams, and sagging floors in basements, crawl spaces, and foundations. Ideal as a house floor jack, basement floor jack, or permanent jack post for long-term structural support. COMPACT & POWERFUL SUPPORT – Despite its size, this adjustable floor jack post delivers strong lifting power. Adjust height easily using the turning wheel, or pair with the Ellis Turning Bar (sold separately) for added leverage and stability. STRONG & SECURE CONSTRUCTION – Built from industrial-grade steel, this house jack supports up to 15,000 lbs. A built-in safety lock set screw keeps it stable, making it a reliable choice for foundation support jacks, floor support jacks, and shoring posts. SPECIFICATIONS & MATERIALS – Adjustable range: 5.5”, Safe load: 15,000 lbs, Weight: 10 lbs, Height: 9.5”-15”, 4” square base & top plates, 1-1/4” Acme screw. Compatible with crawl space jacks, floor joist support jacks, and post jacks. TRUSTED SINCE 1951 – Ellis Manufacturing has provided foundation jacks for leveling and structural repair solutions for over 70 years. Our jack posts for basement and floor support posts ensure long-lasting durability and reliability.