Wall Jacks provide an easy way to lift prefabricated walls into a vertical position, up to 70ft. long. They are available in a 16ft. or 20ft. option and comes as a two pack. Each 16ft. jack can lift walls up to 1,000 lbs at a maximum wall height of 10ft. 6in. Each 20ft. jack can lift a wall up to 500 lbs. with a maximum wall height of 13ft. 6in. They feature square tubing, which is stronger and easier to use than round tube models. These Wall Jacks have a safety pin that is used to hold the upper and lower tubes in a lifting position and are easy to carry from each job site.