Features1This automatic chlorinator is designed to be installed next to your filtration system. 2It is operated by the pressure difference of the system, and the system absorbs water through the feeder. 3The control panel is easy to use and allows you to adjust the dispense rate. 4By adjusting the valve setting between Perchlor and OFF, you can easily adjust the amount of chlorination to maintain proper chlorine residue in the pool. 5Made of environmentally friendly plastic material, corrosion resistant, strong and durable.SpecificationItem Type: Pool Chlorine Feeder Material: PlasticColor: As shown in the pictureProduct Assembly Size: Approx.42cm / 16.5inWeight: Approx. 1130g / 39.9ozOut Inner Diameter: 42mm / 1.65in female and male threadIN Inner Diameter: 42mm / 1.65in female and male threadApplication: Suitable for swimming pool, hot spring and spaPackage List1 x Pool Chlorine Feeder 1 x Base Accessory 1 x Instruction Manual