Now you can install a plumbing kit to your installation for the Opti-Myst Pro line of Built-In Electric cassettes. It can be used with either the 20 inch CDFI500-PRO or the 40 inch CDFI1000-PRO. The kit comes complete with an overflow safety sensor that automatically shuts off the water supply to prevent any leaks. By installing this kit, it alleviates the need to refill the reservoir tanks when you want to use your Opti-Myst cassette. It is always ready when you are ready!