The UTSOLART requires a mounting base kit. The UTBASE is one option. The UTBASE eliminates the need for you to install bolts in part of the tower section, as you only need to install bolts in the concrete. By using the template, you can ensure that the bolt spacing is initially correct and maintained while the concrete cures. In addition, the template allows room for you to embed conduit in the concrete if desired. You can also adjust the UTBASE after the concrete has cured to ensure that the tower is true/plumb.