The Hayward CL220 - Off-Line Automatic Chlorinator is an easy handling and efficient chemical feeder that will provide proper chlorine or bromine distribution to your pool water. It will make the most of your slow dissolving small or large tablets. This feeder does not allow any fumes to escape from the unit as it is completely enclosed, and does not require any special venting. Use this chemical feeder to make sanitizing your pool water more convenient, while making the chlorine or bromine distribution more precise using the dial control valve. 9 lb chemical capacity 8 1/4" Feeder Width 15 1/2" Feeder Height Large dial control valve EasyLok threaded cover Chemical-resistant Viton seal Multiple in-line and off-line configurations Works with both large and small chlorine/bromine tablets Full control of feed rate with adjustable control dial Simple installation and convenient access to add tablets