Use to convert tanks or barrels into automatic stock waterers. Requires little attention and keeps open tanks filled with freshwater. Adjustable to several heights. Install by hanging plated brackets over edge of tank. Designed to operate on pressure up to 70 PSI or from gravity flow with optional special orifice. Precision die cast outer housing. Durable molded float. Includes two sets of brackets. Fits poly tanks and steel tanks. 300 GPH. Installation instructions included.