2 PCS Adjustable House Jacks Post for Leveling, 19"- 36"(1'7"-3') Floor Joist Support Jack for Basement and Crawl Space, 4400 lbs Max Load Capacity(Each), Galvanized Steel, Black

Additional Details from the Manufacturer

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• HIGH QUALITY: This adjustable house jack post is made of high-quality steel with zinc surface, anti-corrosion and resistance to support buildings. Each jack has a load capacity of 2 tonnes (4400 lbs)
• SPECIFICATIONS: Range of adjustment: 19.7"- 33.5"(1.64'-2.8'); base plate dimension: 5" x 5" x 0.16"; top plate dimension: 3.22" x 3.22"x 0.12"; M20 thread
• TEMPORARY OR SECONDARY SUPPORT: Not intended as permanent supports; Floor joist support jacks can provide temporary or additional support during construction and maintenance, for leveling and stabilizing floor beams and joists. Use an basement floor jack to temporarily secure weak floors, crawl space, heavy-duty areas, porches, decks, stairs or roof trusses
• EASY INSTALLATION: adjustable jack post come with double carriage locks for added strength and security. With the included screws and fasteners, you can easily install the house jack in minutes
• SAFETY: The house jacks for leveling is fully adjustable and features a safety locking M20 nut and pins for added strength and security