Applications:HCD-55 Spa Premium Ozone Generator is suitable for all hot tubs and swim spas up to 1500 gallons. 55mg/hour; Universal Voltage: Auto Sensing 120V/240V; Maximum capacity is 1500 gallons. Add the Turbo Mixer to boost ozone effectiveness up to 45%. Material: HCD-55 Spa Ozone Generator Kit is made of high quality plastic, rubber, steel and copper materials to extend the service life. Description:High Ozone Output: 55mg/hour; Universal Voltage: Auto Sensing 120V/240V; Maximum capacity is 1500 gallons. Includes: 1* 6-foot tube, 1* check valve, 1* hose clamp, 1* power cord with AMP-4 prong connector, and 1* installation instructions. Satisfaction Repairs: Order now, if you have any other questions about our Deecaray products, you can communicate with us at the first time, and we will provide you with a 30-day money-back guarantee and a 12-month repairs on quality-related issues. We are always ready to provide you with support and help, you can buy with confidence. HCD-55 Spa Premium Ozone Generator is suitable for all hot tubs and swim spas up to 1500 gallons. 55mg/hour; Universal Voltage: Auto Sensing 120V/240V; Maximum capacity is 1500 gallons. Add the Turbo Mixer to boost ozone effectiveness up to 45%.