Medallion Pools inground pools have been sold as kits and installed by homeowners since our company was founded in 1960. 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.