The DEL Ozone MCD-50 offers durability and environmental reliability with its Corona Discharge ozone based purification system. Made from corrosion resistant material for resilience, this 110V MCD-50 ozonator has a 50 mg per hour output rate, designed for portable spas and hot tubs up to 1,000 gallons. Its ecological engineering works to reduce irritants commonly caused by intense chlorine sanitizer, including red eyes, dry skin, and unpleasant odors. UL-listed, it mounts into the interior wall of a spa and includes an LED indicator for ozone generator operation. The MCD-50 includes a replaceable ozone generating electrode and power supply, as well as everything needed for installation, including tubing, a backflow preventer, and mounting hardware. It comes with a mini J&J cord for plug-in installation.