Arch Chemical 41227 HTH Dual Action 1-Inch Chlorinating Tablets, 5-Pound
The HTH 5-pound 1-inch dual action chlorinating tablets sanitizes pool water. It is stabilized and sun protected which extends chlorine life. Active ingredients: Trichloro-S-Triazinetrione 92.4-percent, Other Ingredients 7.6-percent, Available Chlorine 84-percent