The PRO-400 ozone circulation system is designed as a compact solution for small ozone applications. Used with a wide range of small water treatment applications the PRO-400 includes: a magnetic drive circulation pump, a venturi injector to provide mass transfer of ozone into the water, a 24-hour programmable timer, and a corona discharge ozone generator.Dimensions: 20" h x 12.75" w x 5" d, .5 lbs.Ozone Output: 400 mg/hour @ 8 SCFH on ambient air