BWV1558 Features: * Tablet * Powerful 90pct available chlorine * Faster dissolving for more immediate results * Great for use in floaters, automatic chlorinators and skimmer baskets * Each tab weights 0.5 oz * 99pct Trichloro-s-triazinetrione Dimensions: * Dimensions: 11.5"" H x 13"" W x 13.5"" D