The Hayward CL110ABG chlorinator is a convenient way to control chlorine levels in your aboveground pool efficiently and accurately. Simply fill the corrosion proof feeder with trichlor tablets or sticks, adjust the dial control for proper chlorine levels and enjoy clean, clear water. Saving you time and money. * Convenient way to control chlorine levels in your above-ground pool * Precise dial valve allows you to control the rate of chemical feed * Easy-Lok cover included for safe and convenient access for adding tablets * Unique finger-release catch provides extra security * Simple do-it- yourself instructions