The Culligan 01012580 Carbon Block Filter is a genuine Culligan cartridge. This cartridge is used in the System 101 Drinking Water Filter, as well as the AC Series reverse osmosis systems. The filter should be replaced after 2000 gallons or one year, whichever comes first.
Application: 
Regarded ideal for use in culligan water purification systems, post filters or pre filters for Culligan Reverse Osmosis Water Filters, such as the AC30, AC15, AC50 as well as the System 101 Drinking water Filter.

Specifications:

• Reduces chlorine, taste and odor
  
• Filter Media: Carbon Block
  
• Filter Capacity: 2000 gallons or one year
  
• Superior dirt-holding capacity