ZANURA 11.8" - 15.7" Adjustable House Floor Jacks Post Pole for Leveling, 4 ton Min and Max Height Capacity, Galvanized, 4 Pack

Features

• 【Function】House floor Jacks provides temporary or additional support for leveling and stabilizing floor beams and joists during construction and repairs. Jack post can be used for areas such as stairs, porches, roof beams, decks, crawl spaces and heavy load areas.
• 【Specifications】Range of adjustment: 11.8" - 15.7"; minimum and maximum height capacity: 8800 lbs / 4 ton in total; base plate dimension: 5" x 5"; base plate hole diameter: 0.5"; top plate dimension: 3" x 3".
• 【Adjustable After Loading】Once loaded, if you want to adjust the height, you can firstly loosen the side nut on the base plate tube with provided wrench, then adjust the big nut on top of the base plate tube to your needed height, and tighten the side nut and positioning nut on the screw pole finally.
• 【Installation】Simply keep the base plate stationary and swivel the top plate to required height, and then tighten the positioning nut and side nut to secure the top plate.
• 【High Quality】This adjustable support jack is made of heavy duty steel with zinc plated surface to ensure anti-corrosion and durability.