Enjoy clear and clean water with this Culligan D-15 Level 1 Basic Filtration Drinking Water Filter Cartridge. This item reduces sediment, bad taste, aesthetic chlorine taste and odor in your water system. The replacement cartridge fits Culligan's RVF-10, and it is suitable for well water applications. This home water filter cartridge is designed for point-of-use, under-sink or pre-tank RV installations, and it is not intended to be used with point-of-entry whole house applications. The cartridge will last for up to three months or 250 gallons, and it comes complete with a reminder sticker so you will know when to change it. This Culligan D-15 Level 1 Basic Filtration Drinking Water Filter Cartridge can be used with the US-550, US-600, RO-3000 and RO-3500 Culligan models.