Keep your pool properly maintained with the Hayward In Line Automatic 4.2 lb. Chlorinator Brominator. This automatic chlorinator and brominator is designed to install in-line with the rest of your pool plumbing. The unit is built from ABS resin with an ergonomic lid that allows you to easily add chemicals as needed. Once installed, the unit automatically disperses chemicals at the appropriate intervals, keeping your pool water balanced. Hayward At Hayward, we're more than just equipment. Our objective is to make your pool experience worry and hassle-free. That's why our equipment is engineered to last and work smart at keeping your pool sparkling clean and trouble free.