High ozone concentrations, double-sealed, shock, leak ozone. Suitable for household water purification equipment, air purifier, disinfection cabinet, oxygen bar, dehumidifier, refrigerator, drinking fountains. Household appliances, water treatment equipment, -scale purification equipment, ozone machines, swimming pools, and sewage plants. Colour: main color white Material: quartz + ABS Size: ozone tube size: 210 x 35mm, power size: 146 x 50 x 40mm Package Contents: 4 (circuit board) 4 x Ozone tube