Medallion Pools FunTubs are the most versatile spas and hot tubs of their type on the market. Our simple, bolt together aluminum shell and vinyl liner design means that you have no large, heavy one piece shell to deal with. Just take a look at the installation outline below to get an idea of what is involved. Please note that this page is not a complete installation manual and should not be used as such. Remember, an installation manual is included with every pool and spa kit sold and, if you have any questions, our Customer Support personnel are ready to help answer them.