BWV1571 Features: * Chlorine Stick * Powerful 90pct available chlorine * Extra-large 8 oz. sticks * Slow dissolving, requiring less maintenance * Use in your floater, automatic chlorinator, or skimmer basket * 99pct Trichloro-s-triazinetrione * Diameter: 2.25"" x 2"" Dimensions: * Dimensions: 11.5"" H x 13"" W x 13.5"" D