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INSTALL THE ELLIS MINI JACK IN 4 EASY STEPS Attach Ellis Mini Jack to a flat solid foundation Insert turning rod (sold separately) into turning wheel Rotate rod counterclockwise to raise to desired height Tighten safety set screw with 6mm allen wrench MJ-3 MJ-6 STL-10 STL-10HD SJ-4 Add to Cart Add to Cart Add to Cart Buying Options Add to Cart Customer Reviews 4.7 out of 5 stars 106 4.7 out of 5 stars 106 4.4 out of 5 stars 41 4.7 out of 5 stars 34 4.8 out of 5 stars 115 Price $133.23$133.23 $166.49$166.49 $287.04$287.04 — no data $172.36$172.36 Range of Adjustment 6.5"-9" 9.5"-15" 10"-14" 10"-14" 6" Safe Load Capacity (Fully Extended) 15,000 lbs 15,000 lbs 20,000 lbs 56,000 lbs 15,000 lbs Factor of Safety Applied to the Failure Load 2.5/1 2.5/1 2.5/1 2.5/1 2.5/1 Factor of Safety Applied to the Failure Load Acme Screw Size 1-1/4" 1-1/4" 1-7/8" 2-7/8" 1-1/4" Weight 10 lbs 11 lbs 16 lbs 34 lbs 12 lbs Finish Powder Coated Powder Coated Powder Coated Powder Coated Powder Coated Material High Carbon Steel High Carbon Steel High Carbon Steel High Carbon Steel High Carbon Steel
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 2.5”, Safe load 15,000 lbs, Weight 10 lbs, Height 6.5”-9”, 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.
