Easy Change Replacement Cartridge Features Twist On Twist Off Mechanism Quick Connect Fittings 3 000 Gallon Capacity Reduces Bad Taste & Odor Chlorine Taste & Odor & Particulate Class III NSF Certified For Use With TV# s 783504 787756 802274 & 802373 Not Included. Clear clean great-tasting water for drinking and cooking is easier to achieve than ever before. The Culligan RC-EZ-1 Level 1 Basic Filtration replacement cartridge reduces bad taste & odor aesthetic chlorine taste & odor and particulate class III. Installation is easy with twist-on twist-off design mechanism. This filter can be used in the following Culligan models; US-EZ-1 US-EZ-3 US-EZ-4 IC-EZ-1 IC-EZ-3 IC-EZ-4 and RV-EZ-3. TV# s 783504 787756 802274 & 802373. The cartridge has a life of up to 12 months or 3 000-gallon capacity. * Culligan RC-EZ-1 Replacement cartridge for Culligan EZ-Change drinking water filter systems. * Level 1 Basic Filtration * Reduces: Bad taste and odor aesthetic chlorine taste and odor and particulate class III * Features twist-on twist-off mechanism quick-connect fittings and double water shut-off * Use with Culligan IC-EZ-1 IC-EZ-3 IC-EZ-4 US-EZ-1 US-EZ-3 US-EZ-4 RV-EZ-1 RV-EZ-3 or RV-EZ-4 * NSF Tested and Certified * Package includes: RC-EZ-1 replacement cartridge and cartridge change reminder sticker * Filter life: 3 000 gallons or 12 months