Continue shopping “22421 Poolife NST Non Stabilized Swimming Pool Chlorine Tablet 20.6lb” has been added to your cart. Product Price Quantity Total × 154578 Pentair Purex SMBW 4000 Filter Vent Tube Cap $13.72 154578 Pentair Purex SMBW 4000 Filter Vent Tube Cap quantity $13.72 × 22421 Poolife NST Non Stabilized Swimming Pool Chlorine Tablet 20.6lb $169.97 22421 Poolife NST Non Stabilized Swimming Pool Chlorine Tablet 20.6lb quantity $169.97 Cart totals Subtotal $183.69 Shipping Shipping costs will be calculated once you have provided your address. Total $183.69 Proceed to checkout — OR — Calculate shipping Country / region: Select a country / region… United States (US) State / County: City: Postcode / ZIP: Update