Continue shopping “4CH-30 Cartridge Filter Dolphin Charisma Marathon” has been added to your cart. Product Price Quantity Total × O-500KIT Aladdin Hayward DEX2400Z3A Filter Relief Valve Stem O-ring $9.12 O-500KIT Aladdin Hayward DEX2400Z3A Filter Relief Valve Stem O-ring quantity $9.12 × 4CH-30 Cartridge Filter Dolphin Charisma Marathon $35.66 4CH-30 Cartridge Filter Dolphin Charisma Marathon quantity $35.66 Cart totals Subtotal $44.78 Shipping Shipping costs will be calculated once you have provided your address. Total $44.78 Proceed to checkout — OR — Calculate shipping Country / region: Select a country / region… United States (US) State / County: City: Postcode / ZIP: Update