DEL MCD-50 Spa Ozonator Universal Voltage 120v/240v, w/Parts Bag, Amp Plug Keeps the water in your spa fresh and clean using the high output sanitizing system Will save you money on chemicals, eliminate odors, and features easy installation Mounts to the interior wall of your spa Comes complete with Ozone generator, Ozone supply tubing, check valve, mounting screws, installation manual, and a water chemistry guide For spas up to 1,000 gallons