Works great. It’s almost pre-assembled. Hot tub needs to be empty so you can insert the base underneath. I love that you don’t have to screw into the hot tub walls the lifter is supported by the hot tub weight on the base. I have Aquarest spa and this is the only lifter that is compatible with it. Other products that require screwing into the side walls don’t work since my Aquarest spa has only one wall that you can screw into. The other wall is just a cover for the insulation. I love how it folds to save space.